Question

PLEASE help me! Completely stuck!

Answer 1

i think option C is correct !

Answer 2

is it correct ? if it is , then i'll explain it

Answer 3

@JoeJoldin are you there ?

Answer 4

@mayankdevnani sorry I was doing something, I can't check to see if its right or not, but would you mind explaining anyways?

Answer 5

OMG!

Answer 6

yeah it's c :)

Answer 7

Thanks @mayankdevnani @imnewimlife but an explanation would still be nice

Answer 8

you are f***ing hot

Answer 9

lol

Answer 10

can you find out inverse of that function ?

Answer 11

@JoeJoldin

Answer 12

@mayankdevnani I don't think so, I struggle a lot with finding the inverse :/

Answer 13

\[\large \bf y=-x^2-9\]
To write it in inverse, write the function of `y` in terms of `x`

Answer 14

so x = -(sqrt)x + 9?

Answer 15

so,
\[\large \bf x^2=-y-9\]
taking square root both sides,
\[\large \bf x=\sqrt{-y-9}\]

Answer 16

and we write \[\large \bf y=f(x)\]

Answer 17

so,inverse would be :-
\[\large \bf f^{-1}(x)=\sqrt{-x-9}\]

Answer 18

understood ?

Answer 19

@JoeJoldin

Answer 20

Starting to, thanks! @mayankdevnani

Answer 21

now, solve for domain !