How can you graph x -x on a number line if there are no numbers?

Hi, X - X is 0 because any number minus it's self = 0. So the graph of y = x - x is the same as y = 0

If it had been y = x + x then you would add the x's so it would really be y = 2x.

My question as how to find ∫ (xx) dx. If anybody knows how to do this please contact me at RapidPixel@gmail.com

the integral of x^x dx.

the integral of x to the power of x dx