Explain why an even function does not have an inverse that is a function.
an even function has f(-x) = f(x)
So, there are always two x's for each y. Consequently, there can be no inverse, since there will be two y's for the same value of x.
So, there are always two x's for each y. Consequently, there can be no inverse, since there will be two y's for the same value of x.