Advanced Graphing error?

[Jan_D]

The sin part is not essential, nor the - sign before the cos.

So we can study y=x^|cos(x)|.
Its behaviour is strange indeed, because it is impossible to have 2 y-values belonging to the same x value.

Moreover, when we study for example y=x^0.63 it gives no values for negative x.

In general x^|cos(x)|, for negative numbers is a complex number, and we can plot its absolute value: |x^|cos(x)||, which is real.

When we do this it turns out to plot the y-positive branch of our first function.
Because the plot of y=x^|cos(x)| is symmetric with respect to the x-axis it apparently plots for y its absolute value and its negative.

I think this is a bug.