Question

Please help me out. :)

Find the maximum and minimum then graph.
y = 3 - 3x^2 - x^3

Answer 1

your idea?

Answer 2

No. That's my prof's idea.

Answer 3

take derivate of y, let it =0 solve for x. Show me your work

Answer 4

dy/dx = -6x - 3x^2
0 = -6x - 3x^2
0 = -3x (2+x)
0 = -3x and 0 = 2+x
x = 0 and x = -2

Answer 5

so, what are f(0) and f(-2)?

Answer 6

f(0) = 3
f(-2) = -1

Answer 7

do you know how to make the table? like