this would be my list for uses of calculator to check answers for core pure 1: chapter 1: your calulator does complex number arithmetic so just substitute to check. solving a polynomial always find out by the roots before you try to solve we it to sense check it (remember though that list all your working like "two of the roots must be complex" because...) chapter 2 argand diagram slightly trickier to use calculators but try solving same ploting polar. coordinates visulaise the scenario using Cartesian coordinates. when solving a nonlinear simultaneous equations always remember to substitute then use Solve N to check. chapter 3 just check using the actual summation notation solver and just substitute your values to check. chapter 4 just find the actual roots by solver and check if they follow the rules in the question. chapter 5 use the built in integration tool to check and substitute chapter 6 and 7 just use in built matrix tools questions with variables just sub in values qnd sub in the same values to see if they match. Questions with 0 det simultaneous equations use the simultaneous equations solver to check how many solutions. 8 actually check values to see if the proof seems reasonable 9 If you want to do dot product do two vectors but do the transpose of the first vector then use matrix multiplication. for cross product just do the det of 3 separate matrices.
Hi Mr Bicen I just wanted to say thank you for making these videos, especially your lessons. I am self-teaching Maths and Further Maths in Year 11 right now to take my exams next year independently, and your videos make me feel more secure as it feels like I have a structured learning environment to fall back on if I get stuck. Thank you again :) Do you have plans at all on uploading lessons for Further Maths: Further Pure 1 (the option topic) or do you not teach that? Either way, your content is great and so are you!
First of all, that’s so cool that you are self-teaching! I love that, hopefully my lessons will help for any bits that you are finding harder. Have you accessed all the things you need from my Bicen Maths Google Drive, too? I will be aiming to upload FP1 at some point in the near future, as lots of people have been asking for this! It might be a little while, but hopefully soon enough for you! Thank you for the compliment, too! Good luck with your studies 👍🏼
@@BicenMaths Yes, I found your Google Drive. It's extremely helpful and I'm so grateful you put all of it together, it's rare to find such good organisation of exam questions grouped by topic. But I'm really so thankful for what you do.
It’s my pleasure - I love to be able to help other students with work/explanations I’ve already done for my pupils. Thanks for your lovely comment, it really encourages me to keep going!
Thank you - you are ALWAYS my go to channel any time I need to do something new on the calculator. A brilliant RU-vid channel 🙌🏼 Thank you for all your excellent videos!
Hi sir, thank you for these videos they have helped me so much! Please could you make a video on all the proofs you need to memorise for A level Edexcel maths, for example the sequences proofs? Thank you ☺️
Hi sir, I have a few question about core pure 2 2019 paper: for question 8 d why did they change 15litres to 0.015 instead of using 15? Also for question 5 how did you know whether to use radians or degree? Lastly for core pure 1 2020 paper questions question 4a why are they using cross product in the mark scheme that isn't in the specification. Sorry to bother you with these.
I don’t normally reply to such specific requests as these… but for 8d, it’s because 1m^3 is 1,000,000cm^3 or 1,000,000ml. So 15 litres in m^3 is 0.015 (convert the litres to ml then divide by 1 million). I’m not sure in Q5 where degrees/radians would come up, but you always use radians for calculus, never degrees. Lastly for 4a, the cross product is only in the mark scheme as it’s a common method that students who do FP1 module would use, so it’s there just for reference. There are other methods that you can do instead! Hope that helps.
Hi sir if your struggling for any video ideas, I would find it very useful if you went through the textbooks and picked the hardest questions from each topic and worked through them thanks for your videos
Yes, you do! The examiners know this can be done in this way, so it would warrant full marks. Make sure you write down the distribution though (eg X~B(60,0.3)) as this is a separate mark!
I actually really don’t like inverse binomials on calculators, it’s so annoying! I always use the tables provided for these, and haven’t yet seen an exam question where the probability doesn’t appear in the table. But I’ll add it to my list of things to do in a part 2!
I personally use the distribution mode for statistics. For question where it is asking about distributions and it's talking about ≥ not ≤ can you just use the calculator or do you have to show working?
You can just use the calculator - I read in some feedback from Edexcel that ‘if students can do it on their calculator, we should be expecting that they will do this’ (of course this doesn’t apply to questions that say ‘show, using algebra’, or ‘graphical methods are not acceptable’, etc. For the binomial questions, it’s often 2 marks - one is for writing down the distribution (e.g. X-B(10, 0.2)) and the second for getting the answer, there is no method mark, so no need to show it! Hope that helps.
hi! adding on to this comment, i wish to enquire more about when we have to write down the workings if the calculator can do it for us one instance is when we need to calculate the area under a curve: can we do the numerical integration thru the GC or do we have to manually show all the workings out? 2. i have a question on which calculators are approved: i have noticed some calculators are able to give answers in surd form while not for the others; will give a decimal. for “leave ur answer in exact form” type of qns, having a calculator that gives u surds is very convenient otherwise u have to work out the surds manually. is this type of calculator allowed? Thank you😊
@@alitan5583 1. For integration you MUST manually show the actual integration, and in pure you must definitely show that you are subbing in the limits for the upper and lower boundaries - you can only use the calculator to check your answer is correct. 2. Calculators that can do surd form are definitely allowed!
Guys, there’s something missing in my data i don’t know how to reset it again Like 3D graph , conversion, picture plot, and geometry are missing can anyone help?
Hi can u help me please , i have a problem in my fx-cg50 i reset my calculator by choosing initialize all so all my storge memory have no data when i enter memory and the Periodic table disappeared because there is no data in the calculator, i want to get back my storge memory files and the periodic table and the another files in th main data.
Yes they are! Exam mode restricts some vector calculations, and also doesn’t give the equations of tangents - but you can still plot and trace them in exam mode!
Hello Mr Bicen, when I press the MENU/SETUP button I only get the first 3 modes, I've tried reset then setup data, it didn't work, what else should I do???
Made a short list of items I would like to see on the next version of CG50: Show the derivative in X or Y solver, not just in trace in the graph mode. Provide dy/dx solver in graphing app so that x/y value can be found for a given gradient... and also for a given second derivative. Provide a gsolve option to identify points of inflections in the graph. And even identify concave and convex areas in different colour. Allow parametric equation solve features just like normal cartesian graph gsolve features as none of the g solve soft keys work at the moment when it comes to parametrically defined curves. Allow us to do everything including finding areas. Please move the radian degrees item to first on the list of settings as we have to frequently switch between degrees or radians and it requires too many key strokes. We can find the tangent/normal to a graph using sketch option but the equation of the tangent/normal cannot be pasted into the graphing app as a curve. If we could than it would be easier to find where the normal/tangent intersects other key points. Please allow us to adjust the font size. The bottom keys of the CG50 have been shaven off at an angle compared to the Classwiz 991EX. The height of the area we press is less. This makes key presses less comfortable than classwiz 991EX. Please could you restore full size. Allow recurring decimals option where we can enter and convert between recurring decimals and other formats. Allow us to find prime factors of a number, as other less advanced Casio's do. Allow calculations of volumes of revolution, and 3D depiction of volumes of revolutions. Conics app is isolated from graph app and is really not that useful... we need to be able to plot tangents or other curves with the circles to find intersections with the circle etc. Importantly, please could you allow us to define a cartesian graphs IMPLICITLY... the grapher becomes useless when an equation is implicitly defines. Other calculators are able to show implicit graphs. This allow circles to be plotted easily without a separate conics app. The new distribution app is almost useless in an exam conditions or computations setting. This is because it lacks all the features for calculating but visually shows the distribution (useful), which means you need to be in the stats app for calculations. So to make the ability to see the distribution accessible, I would like the option to visually see my distributions where I am doing my calculations (stats ap) and not have an isolated distribution app to go to. Please integrate the distribution ap features in the stats app. Infact, the z distribution shows in the stats ap. Please integrate the distributions app this way. When we get an answer for a probability in the stats ap, please allow us to copy / store in a variable like x/ANS so we can move to main and use that value for the probability in a calculation... often we have to remember a string of digits to copy. Transformation of 3D images in geometry app will be very useful. Please allow us to copy the ANSWERS from intermediate calculations in main rather then just the calculations line... this is a really annoying omission from the calculator. Also sometimes calculations line that used ANS in the calculation does not contain the answer from the part before if further calculations were executed...a software method to detect this would be nice where it takes the answer from the line before. Enable Spearman’s rank correlation coefficient calculations in the stats ap. Allow access to all Statistical Table of values (eg. Critical values) for all types of distribution such as for critical values for Hypothesis testing for zero correlation of bivariate data - PMCC values vs significance level and sample size. Allow us to access stats data as we still have to use a book to access these stats data, it should be in CG50, if it has a periodic table it should have this. Allow the stats app to perform Hypothesis testing for different distributions by taking all the required parameters (like numworks calculator does). Allow Negative binomial distribution function in the statistics aps. Recursion web graph does not start at the table start, please fix this. List commands have to be executed in main rather that in the stats app making it difficult for use. Again, please bring the ANS key to CG50 like the classwiz. Square root should also ideally be a direct key and not a shift operation. When we select a function operation using soft keys in main and it appears on the screen, knowing the syntax is often a problem, find a way to quickly view the syntax of the operation. Some of the vector operations and vector input are in different locations, bring them in a coherent place. Provide decametres and decimetres for length conversion. A dark mode option.
Hi, I bought fx 991 calculator for my son. Would that be ok for him to do A level maths. He said college has been pushing them to buy cg50. Do you think by having fx 991 people are restricting the ability to get better grades?
I think that the cg50 does offer some advantages, but it isn't essential. I would consider getting the cg50, keeping it in good condition, and then reselling on eBay - they retain their value really well, as people want to buy them second hand (they're expensive!)
For binomial and normal distribution sometimes questions has 2 marks to find the probability which mean a 2 step to get mark but the cg50 i can get answer instantly will i get the marks if i just used calculator
Hello, for the cg 50, is there a menu where you can see all of your stored values for the variables? In the fx 83 gtx there is a menu where you can see all of your stored values but I can't find such a menu on the cg 50
Hi! After putting your calculator in exam mode, it loses some of the settings needed for further statistics, which you have to go and input yourself in the exam. Do you know what these settings are and how to set them up once your calculator's in exam mode? Thanks!
Currently watching this video, you may mention it later on, but do we have to have exam mode for alevel maths and FM? On the calulator guide youtube channel he says you don't and it is only used for IB exams. However I saw a document by jcq that you do? There seems to be conflicting advice.
Hi Mr Bicen, I understand you can verify your answers using the calculator for definite integrals and differentiation with limits. However, would it be possible to verify your answers using the calculator for indefinite integrals and differentiation without limits. I have both the graphical calculator and the standard one. Thank you very much.
No, there is no way to do this on these calculators - and if it were possible it would be banned from the exams! You are banned from using calculators that can do algebraic integration rather than numerical integration 👍🏼
Hi im (hopefully) doing a level maths in september do you think i should get both? or just one? (if so, which one)? im not doing a level FM because i don't need it
So I think this is because of the graph mode you’re in. Go to 5 Graph, and then change the type of graph so it is Y= rather than X=. This should fix it for you!
Mr Bicen, if you get the chance could you please do a basic list of all the main areas you expect to be on questions 1-8/9 on the upcoming papers, basically just to prioritise revision on areas for the easier questions to achieve a definite C. Thank you
I think it’s really, really hard to predict which questions should be in the first 8/9 questions, so I’m not that keen on doing this as it might mean people direct their revision in an incorrect way - I’m sorry as this isn’t what you want to hear, I’m sure!
hi sir, i was curious as to what i should keep my calculator in (radians or degrees?) and how would i know what the question would want the answer in if its not specified... ive heard that for any sort of differentiation and integration it should be in radians- is that true? and what about other questions that dont specify? if it matters im not doing further maths, just maths alevel with edexcel
I would usually keep my calculator in radians - as most of the time you’re using it would be for differentiation or integration, which MUST be in radians. I’d then switch to degrees if the question was explicitly in degrees, or was a modelling situation where it discussed degrees. I hope that helps!
Personally, I do think it is worth it. If you are able to afford it, I think the cost spread out across the two years is reasonable. Luckily, at my school is someone was unable to afford it they were given a reduced price, so everyone had good access to it.
I wonder if you're allowed to use the CG50 for the IAL Math exams.... sketching questions with the fx991ex classwiz on P3 for example still require some thinking, but using the cg50 you can just find all the points of int. on the calculator. To my knowledge you can't do that on the classwiz.
Yes, it can - and to find the area of the polar or parametric, I just use the normal integration function on the calculator, not the graph screen, to find the result of an integration with limits!
Getting used to new technology is ALWAYS annoying - just think when you get a new phone update or something - but quickly you get used to everything. Just keep persisting!
I personally think it is worth it (if you are in a lucky position for your family to be able to afford it), mostly for the time and stress that it saves. I had a graphics calculator when I was at school and loved being able to visualise the graphs and deepen my understanding. My favourite feature is probably for binomial distribution probabilities - it’s just so much better than the Classwiz and means you’ll make far fewer mistakes and save time.
I don’t have plans for this but will try and do some with specific guidance on some of the topics suggested - eg one on a^x graphs, and everything about them, as it is guaranteed it will come up! It’s my next project!
@@BicenMaths Hi Mr Bicen, do you plan on making predicted papers for the 2022 normal A level Maths based on the advanced information or the sort of questions that might come up in the exam this year? I think that would be very helpful.
Thanks so much. Although i absolutely love this calculator, I would pay money for Casio to replace the exponantial key with ANS key. And its missing so many glaringly obvious features which software updates could have fixed...
@@BicenMaths Whats worst is, every expensive Casio calculator does this except for the cheaper ones...so they believe in it as a principle! And another oversight is the radian/deg option is a mile down the setup list... why on earth is it all the way down? No. of keystrokes and seconds wasted in an exam.... I don't know if you noticed but none of the G solve features work when you go into parametric mode..., yet the soft keys show... the times u need them and you are stuffed even though it gives you hope it can belp you with parametric equations. Although there's an app with hundreds of physics and chem constants, we can't look up any stats table and have to look into a book eg. Required pmcc for a sample size when doing hypothesis testing for correlation / other critical values etc. Why can't I copy (clip) an answer line but have to copy the a calculation line... I wish they would listen to some real users... Ok rant off!
Do you think you could make one of these for stats as there's a few things such as distribution and standard deviation etc. This along with the everything you need to know videos have helped me a lot so just wanted to say thanks.
This is a great idea! I am afraid if you’re wanting it for this year’s stats exam, it won’t be done in time, but I’ll bank this idea for the future for sure!
Make sure you’ve practised all the skills (eg normal hyp, inverse normal, taking moments, etc) and then all you need to do is decide which skill to apply at which point!
It depends on the question - I would advise only to use the calculator for checking things rather than as your main tool. However, for things like solving quadratics and simultaneous equations, unless it says “show using algebra” then you can just put it in the calculator to get the answers and don’t need any working!
Yes - first you need to be in Radians mode, so change that first. Then if you go to Graph, draw your graph, then press V-Window. You can then press trigonometry and it should give you a suitable scale. If you want it to go up in increments of pi/2, you can add that by typing pi/2 in Scale. This means it will go up in multiples of pi/2 for the grid now!
@@BicenMaths Thank you so much sir!! It’s not too much of an issue, but would you know if there’s a way to convert the x-axis out of decimal format e.g instead of 3.1415 it said π ?
No, any calculator which can do algebraic differentiation or integration is not allowed in the exams. The only thing it can do is give you a value of the derivative at a specified point!
For the Graphics, on the main menu, go to System (G), scroll to the next page (F6), then select Main&Storage (F1). This does a reset of all the memory! You can also select to reset just the Storage Menu if you prefer.
Hey Sir, thanks so much for your videos! I was wondering if you knew, approximately, what mark we would need per paper in order to get an A / A* for this year's A Level exams? Thanks!
I would think the grade boundaries will be roughly in line with previous years, which is about 55-60 marks per paper for an A, and about 70-75 marks per paper for an A*. You can look up the grade boundaries from Edexcel on their website! There are some things that could make them higher (like people have the advance information) or lower (like giving out more As than in 2019), so on the whole I think they’ll come out roughly similar. Of course, this is just my best guess! Anything *could* happen. Good luck! Please let me know how you do in your exams!
Hello Mr. Bicen! Do you think you could do a video on center of masses for 2D laminas? (I’m doing international AS and A2 by the way)Your videos have really helped with revision, especially the NLR ones!
Thank you! I’m afraid I don’t teach this topic right now so it’d be quite a lot of prep work for me, so can’t do the video - but pleased you’re finding the other stuff useful!
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