Question by  candykitty13 (61)

What is the inverse of the function f(x)=xcubed +x?

I need the inverse of f(x)=xcubed + x.


Answer by  Diddum (348)

The problem is that the inverse of the function f(x)=x^3+x, where defined, has a very complicated structure. In practice you must find a solution of the cubic equation y=x^3+x for x, and unfortunately the 3 roots have a very complicated formula.


Answer by  Craig19 (154)

The inverse of the function f(x) = xcubed + x is 1/(xcubed + x). The inverse results when the number 1 is in the numerator with the function in the denominator

You have 50 words left!