how do I differentiate 4*x^(2x)? The professor explained to the class while i was sleeping... and I dont quite get what my fd was talking about... can anyone help? I know x^(2x) is different from a constant to (2x) but I dont no how to do it... is the answer (x^x)(lnx)+(x^x) if so could you guys explain it step by step? THANX!!!!!