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Given the function f(x)=3x^3+2, find the value of x so that f^{-1}(x)=4.

 Nov 7, 2019
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Given the function f(x)=3x^3+2, find the value of x so that f^{-1}(x)=4

 

Note that  if    (4, x)    is on the original graph of f(x)  then   (x, 4)  is on the inverse

 

This implies  that

 

f(4)  =  x   ....so....

 

3(4)^3 + 2   =  x  =   194

 

 

cool cool cool

 Nov 7, 2019

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