If you are talking about for the range you are correct, since the lead coefficient is negative the quadratic will open downwards and thus the range will go to negative infinity.

I need help. plz help me solve this. Thanks you very much IF the function f is defined by f = { (0,20, (1,-1), (4,6), (2,5) } and the function g is defined by g = { (-1,6), (1,0), (2,4), (4,1) } then f (g(4)) =?

isnt 4x4x9=144? not 64

@SuperGogeta210 you are correct! I misread my own handwriting, thank you for bringing that to my attention!

this might sound dumb bt whats "all real numbers" can u explain it in a simple way

For the Domain, would what you wrote also translate to {x|x (is an element) R}?

Yep, they would be the same 🙂

umm wtf..? what do u mean all numbers are real? thats what i dont get

I really love this video. Awesome

You are GREAT!. Thank you I think I'm getting this problem on my Midterm today. God bless you and continue doing a great job. 🙂

lefty ftw

how did you get negative infinity, is it because the coefficient is -4?

If you are talking about for the range you are correct, since the lead coefficient is negative the quadratic will open downwards and thus the range will go to negative infinity.

The answer.is wrong at 9:25

The denominator is 4 not 8

Great video btw

thanks you helped me with my IB test : )

I need help. plz help me solve this. Thanks you very much

IF the function f is defined by f = { (0,20, (1,-1), (4,6), (2,5) } and the function g is defined by g = { (-1,6), (1,0), (2,4), (4,1) } then f (g(4)) =?

if ur going to write something stop erasing what you wrote before… its so annoying

its hard to learn past my throbbing erection