Find the domain of the inverse function, q−1(x). express your answer as an inequality.

Hello from MrBillDoesMath!

x >=4

Discussion:

The inverse of q is

-1 +\-  (x-4)^(1/4)                             (the fourth root of x-4)

(Inverse found by solving  x= (y+1)^4 +4 for y)

The domain of the inverse is therefore x such that x -4 >=0 , i.e. x >=4

Regards,  

MrB

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