australian accent hit just right

I guess I’m lucky I love math

Glad it was helpful!

that would make the formula for that sequence : 2*nC2 + 1*nC1 + 0 = n ( n - 1 ) + n = n^2

Awesome, thank you!

Parabolas aren’t linear tho?

@@zachfriedman4263 Oh I only just realized that I said linear equations lmao, I have a topic of linear graphs. I'm doing a mix of quadratic and linear equations, I get them mixed up more often than I should.

@@Spiceturtle oh, ok. Good luck!

Same ! This made it easier to understand 🙂

You are wrong. All of his are correct.

When squaring numbers, the answer will always be positive no matter what, even if the number being squared is negative. I’m this case, both 3^2 and -3^2 will both equal 9. Looking at the equations may be of help in understanding this better as well. So, 3•3=9 and -3•-3=9. This allows you to see that the tule when multiplying by two negatives also applies when squaring negative numbers. I hope this helps!!

Also for a follow up video: Higher order graphing plz. y = x**nth type stuff.

It’s just a formula that’s always been used to find x in standard form quadratic equations

It's the"front end" of the quadratic formula ... the rest (the part in the radical) can be rearranged to find y like this: c - b^2/4a

Thanks folks. That makes sense.

if you differentiate w.r.t. x the equation of parabola f(x) and lets say the diff. function is f`(x)... this f`(x) shows the change in Y w.r.t. the change in X. so basically it shows the slope of tangent drawn at any arbitrary point to the equation f(x).. we do one simple operation f`(x)=0 because this means the slope of tangent to a specific point(we are about to find it) of that parabola is zero and we know that slope equals zero for horizontal lines. again slope is the change in Y w.r.t. the change in X (in very basic analogy it is ΔY/ΔX which can be written as tanθ, where θ is the angle made by any tangent with the +ve X-Axis) and when line is horizontal it means it makes 0 degrees angle with X axis so tan(0)=0 ..... and tanθ=ΔY/ΔX=change in Y w.r.t. the change in X = f`(x)=0 (for now)... now if you look at the base of the parabola you can easily see that tangent to that point is horizontal so by doing the operation f`(x)=0 we can solve it and can find x for the base of parabola... which comes to be -b/2a... and it is very important for a vertical parabola so we remember it

@@ricos1497 plz see some differentiation lectures if you have trouble in understanding the above paragraph.... calculus is very beautiful

I don't really understand it, im not an english speaker, do you know a video that talk about this way, much appreciated

@@novalozano7520 sorry I don't, I just randomly watch math vids at leasure, I don't generally record their locations, anyways some of the terms I remember off hand that may be what you're on about (not sure since you didn't specify what confused you) are below with my understanding of them: vector: set of up to 3 positions (for x, y & z axis) with a 4th number for something else, I think it's just matrix math (I'm no expert) matrix: set of up to 4 vectors (I believe the purpose of a matrix is for rotation) normalisation: the act of dividing 1 by N, this gives a value between 0 & 1 which is the equivalent of a percentage, just in a form that is easier for math operations parabola: appears to be just a curve, perhaps a subclass of curves

@@zxuiji got it, thank you