SOLUTION: Please help with, If f(x)=5x^3-7 then f^-1(x)= I have worked out (x+7)/3)1/5 but this is showing as not correct. Thank you in advance.

Algebra ->  Inverses -> SOLUTION: Please help with, If f(x)=5x^3-7 then f^-1(x)= I have worked out (x+7)/3)1/5 but this is showing as not correct. Thank you in advance.      Log On


   

Question 1022651: Please help with, If f(x)=5x^3-7 then f^-1(x)= I have worked out (x+7)/3)1/5 but this is showing as not correct. Thank you in advance.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x=5%2A%28f%5E-1%28x%29%29%5E3-7

Solve this for f%5E-1%28x%29.