Outstanding and very thorough. I like the way you refer to the extension into Grade 11 and what is to be expected at that level and to remind the learners that they need to ensure that they grasp the concepts at this level.
Will you please do another video of this? The latter part I became confused as to where the formula came from. Somewhere around the last 8 minutes. However, this was the BEST VIDEO lesson taught on Quadratic equations! Please put another one up for me and tweek the last 8 or nine minutes. You are awesome!
honestly id like to say thank u for making such video im in g12 and I didn't understand fumctions , like I didn't know anythinh and after watvhing your videos I feel dumb that how couldn't I understand such an easy thing thank you aaaaalllllooootttt
@@nthatimot3496 hi hon I am not available for private help but I may be able to refer you to someone who is. Email me at Lisa.oswald.ferreira@gmail.com
Thank you so much for doing this, I did grade 12 in 2011 and my maths was not good, so I have done a course that I didn't enjoy in vrsity, now I have decided to go back and upgrade my grade 12 results so that I can do anything I want to do without limitations. I am rewriting next year.
You go straight to the point Lisa thank you and I promise you that I will watch more RU-vid videos for you class math thanks again Lisa. Oops my name is kgotso but you can call, me. Liam
Goodmorning Lisa I have a question on finding the x values that are increasing and decreasing close to the end of your video, how do we know where to start on those 2 graphs, for example the happy graph in blue, it was very confusing because I kept on wondering if whether to find the increasing x values, I thought I could say xE (positive infinity to 0) then for decreasing, 0 to negative infinity? Also for the red graph, when I read the inc and dec x values, can I read it from any side or there is a rule from which side we can read it?
Hi Lisa, at time lapse 9:50 - The points (-6;0)(6;0), must the minus point always be 1st same as with Points (-2;0)(2;0) or can we write it the inverse e.g. (6;0)(-6;0)
Good question... It's because at the turning point it is neither increasing more decreasing. Like at the top or bottom of a roller coaster when you are kind of neither going up nor down, there is what we call a "stationary point"
