Posted by Jacob on Thursday, April 11, 2013 at 6:42pm.
The function f(x)=x^3 +1/4 x −1^4 is a monotonically increasing function, hence it is injective (onetoone), so its inverse function exists and is well defined. How many points of intersection are there, between the function f(x) and its inverse f^−1 (x) ?

Algebra(1st one was typo)  Reiny, Thursday, April 11, 2013 at 7:46pm
so is this one,
try doing it the way I did it in your original post