so the problem is to determine where each function is increasing, decreasing, concave up, and concave down for this equation:
y=1/(1+e^-x), x=all real numbers
for this one, honestly, i have no idea how to even start.
second problem is y=(2x-3)^(1/3)
i took out the first derivative and got 2/3(2x-3)^(-2/3)
but i don't know how to get the second derivative right.