How do you find the inverse of f(x)=root5(5x+4)f(x)=5√5x+4?
1 Answer
Feb 24, 2017
Explanation:
Let
Swap
Remember that
Solve for
- 5th power both sides:
x^5 = ((5y+4)^(1/5))^5 = 5y+4x5=((5y+4)15)5=5y+4 - Isolate
yy :5y = x^5-45y=x5−4 - Simplify:
y = (x^5-4)/5y=x5−45
The inverse function