Question

if f(x)= (3x-10)/(9x+9), what is f^-1

Answer 1

I already posted the solution to that

Answer 2

hint: y = f(x)

Answer 3

oh sorry i came up with the same solution and it doesnt workk

Answer 4

multiply both sides by (9x+9)
--> (9x+9)y = 3x-10
9xy +9y = 3x-10
9xy -3x = -9y-10
x(9y-3) = -9y-10
x = -(9y+10)/(9y-3) = f^-1(x)

Answer 5

thanks DC

Answer 6

That's the same thing I posted.

Answer 7

ok sorry

Answer 8

help with this one g(x) = 7x^3-3, what is g^-1 (x) im not sure what to do with exponent

Answer 9

Post it as a separate question.