Here's the question you clicked on:
arneswe
y=ln(2x*e^-x)
yes. That is a function. What do you want to do? Integrate? Derivative? Sum?
derivative of a natural log is 1/u * du/dx. so in this case its 1/(2x*e^-x) * (2e^-x - 2xe^-x) simplified form is dy/dx = (1-x)/x