Here's the question you clicked on:
S
Can somebody show me the steps how to find the minimum or maximum point of f(x)= (4x-1)/e^(x/2) ?
Take the derivative and set it to 0 and solve for x... and when you get x, for this problem, i think it's around 2.5..ish..... so plug in a maybe 1 and a 4 (points right and left of x), to see if the slope is a max/min. if it's max, then the slope changes from positive to negative if it's a min, then the slop changes from negative to positive.
Refer to the attached solution.