jlcowgill

questions is find the interval of increasing and decreasing H(x) = (x^2-1)^3 H'(x) = 6x(x^2 - 1)^2 is my crital numbers x = 0, x= sq root 1, x= sq root of -1 when i am plugging them in numbers i plug them in to the deritive example -2 it = a negitive number decreasing ,-.5 it is decreasing, .5 increasing , 2 increasing them for concave up or down i do the same thing and get H"(x) = 12x(x^2-1) are these concepts correct? thanks joe

can somebody please tell me how the real numbers, imag. numbers, and complex numbers to each other. this was a question that was asked to me and i didn't know the answer thanks joe