Question 385604
given f(x)= 5x^3, 

find f^-1(x). 
1st: Interchange x and y to get:
x = 5y^3
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2nd: solve for "y":
y^3= (x/5)
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y = cbrt(x/5)
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then state whether f^-1(x) is a function
Yes, it is a function.
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Cheers,
Stan H.