Question

What is the inverse of the given function?
y = 7x2 - 3.

Answer 1

\(y=7x^2-3\) can you solve for \(x\)

Answer 2

we cant open those links....

Answer 3

And how do i solve for x?

Answer 4

they ask for user/pass

Answer 5

All of them?

Answer 6

yes

Answer 7

Well just forget them lol So how do i do this ?

Answer 8

\(y=7x^2-3\)

add 3 to both sides

\(y+3=7x^2\)

divide by 7

\(\frac{y+3}{7}=x^2\)

square root both sides

\(\pm\sqrt\frac{y+3}{7}=x\)

Answer 9

now switch the \(x's\) and \(y's\)


\(y=\pm\sqrt{\frac{x+3}{7}}\)

Answer 10

note that this is not a function

Answer 11

Umm thanks ? :)

Answer 12

lol whats the ? for?

Answer 13

Cause you kinda did the problem for me /.\ I mean thanks like so much :) but i wanted to like ...do it lol in case i get a problem like it again

Answer 14

so i know how to solve it:P

Answer 15

lol I showed you how to do it,

Answer 16

I showed each step and explain each step, if you don't understand a part, ask about it. Else do the same thing....

Answer 17

its the same thing if i said 7=3x+8

and asked you to solve for x

just now you have a y in there, but thats ok .... just treat it like a number

Answer 18

ok:)