Complex Numbers : Modulus and Argument | ExamSolutions

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Complex numbers - modulus and argument. In this video, I'll show you how to find the modulus and argument for complex numbers on the Argand diagram.
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Опубликовано:

6 фев 2012

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Комментарии : 239

@DW_-lb4mq 9 лет назад

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@SyntaxError-nz4kg 3 года назад

Thank you so much! I was unsure how the awnser of a problem where I have to find argument of a problem simply indicated as being -3i (so the real axis (Re) is 0), but you explained it perfectly in how the angle is measured from different segments. Because the point is in the 3pi over 2 line, the angle is pi over 2 (I know it's shown as a minus, but my teacher always siad an angle can never be negative so that's what had me confused and I THINK I understand it now, thanks to you). I would never have even known how to ask about this, but you awnsered it so perfectly, thank you sooo much!

@ExamSolutions_Maths 11 лет назад

Make sure your calculator is in radians mode. I suspect it is in degrees mode.

@imranalif4792 2 года назад

How do I take the calculator to radians mode in casio fx-991

@ExamSolutions_Maths 2 года назад

@@imranalif4792 Shift > Menu > 2:Angle input > 2: Radian

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@mohanishsomnathe4897 7 лет назад

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@richardlighten7076 7 лет назад

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Considering this video is over 8 years old you probably won’t read this but Thankyou so so much you have an excellent teaching style

@abidshahriar7346 9 месяцев назад

Sir thank u so much. I got my annual examinations next week and math is the 2nd exam... I completely forgot how to do this but you explained it so simply...

@petelok9969 5 месяцев назад

Nice, very clear. Thanks 😊

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@mathsir2042 7 лет назад

very precise and to the point. thanks

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@chloemillar7427 7 лет назад

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@boutangboutang9185 7 лет назад

Chloe Millar

@ExamSolutions_Maths 7 лет назад

Well done.

@ExamSolutions_Maths 12 лет назад

Thanks for your support

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@ExamSolutions_Maths 6 лет назад

Thank you for your support

@ExamSolutions_Maths 12 лет назад

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it was very helpful thank you

@martinhawrylkiewicz2025 Год назад

Great vid! Another care should be taken when talking about Arg(z) and arg(z).

@poonammhaske6441 Год назад

Brilliant explanation 🙏

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@ExamSolutions_Maths 6 лет назад

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@ExamSolutions_Maths Год назад

Glad it's useful to you!

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thanks a lot sir......it was a great explaination...loved it...very very interesting and helpful...

@ExamSolutions_Maths 9 лет назад

Cheers

@arinzeani1709 6 лет назад

how do you know where to label the acute angle (alpha) on the line of Z

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thank you very helpful indeed

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@ExamSolutions_Maths 8 лет назад

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Massive thank you! So beautifully explained

@ExamSolutions_Maths 7 лет назад

thanks

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@aries-9286 7 лет назад

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@sadianosheen3528 2 года назад

Excellent explanation

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You are a lifesaver

@ernie345 Год назад

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Helped a lot👍

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Great video sir

@KanishyaGanesalingam 11 лет назад

THANK YOU THANK YOU THANK YOU!

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Tomorrow is my exam..thanx for the explanation 🤩

@bradduke 12 лет назад

Brilliant - looking forward to my exams now!!

@hq448 2 года назад

How was the exam

@MathwithWaqasShah Год назад

excellent lecture sir

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@serpentgamer7396 7 месяцев назад

question? do you require to keep your calculator in radians mode all the time for complex numbers?

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@ExamSolutions_Maths 6 лет назад

No problems - Thanks for using the website.

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Thank you for thid interesting video

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thank u very much for your help :)

@prakrutibharadwaj9820 6 лет назад

Sir i need immediate help i want to know where this method has been taught it is not in books i did it in my schl but teachers disagreed..

@catherinegutierrez2024 Год назад

Big help Thanks

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@ExamSolutions_Maths 4 года назад

And you

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thank you very much...

@maryammalik9924 10 лет назад

Thanks Alot! but i have a question if u dnt mind sir! In this time 3:53-3:56 u said a word i heard it "quargens" what is it?

@ExamSolutions_Maths 10 лет назад

Yes

@584emad 11 лет назад

in the third quadrant , why did you put negative pie? thx

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Thank you sir

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this is still helpful even after 8 years

@ExamSolutions_Maths 3 года назад

Maths is timeless.

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Unbelievable video helped me a lot. Thanks

@ExamSolutions_Maths 3 года назад

Good to hear. Best wishes.

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Thank you. Amazing video

@ExamSolutions_Maths 4 года назад

Thanks

@EvanMcLaren Год назад

Thanks, this was helpful.

@ExamSolutions_Maths Год назад

You're welcome!

@gayanprasanna4552 10 лет назад

very very helpful.Yhank you

@ExamSolutions_Maths 10 лет назад

You're welcome

@MathCuriousity 11 месяцев назад

What program was used to create this and what was used to “record” the program?!

@jokerclub211 7 лет назад

Your my g from day jus know

@gibsonkipkorir7855 7 лет назад

nice tutorial

@NATHANINBA 11 лет назад

THANKS A LOT. one more doubt. how we get the value 1.17 rad for tan inverse 12/5. please elaborate. i cant able to get that. please and thanks a lot

@blahbleh5671 7 лет назад

It's much easier to just consider this rule: argz=tan^-1(y/x) (+/ - pi for fourth and third quadrant respectively) i.e. Add pi if z on the argand diagram falls in the top left quadrant. Subtract pi if z on the argand diagram falls in the bottom left quadrant.

@ExamSolutions_Maths 11 лет назад

yes

@jyotishmahenry4082 3 года назад

Bruh...u explained this within 16 mins and 49 seconds and made me understand while my teacher explained it over an hour and i still couldn't understand.