Question

The graph of y = f ′(x), the derivative of f(x), is shown below. List the intervals where the graph of f is concave down

Answer 1

Answer choices

(–4, –2) U (2, 4)
(–2, 2)
(–4, 0)
(0, 4)

Answer 2

concave down: slope = decreasing

Answer 3

yep and then increasing

Answer 4

yep i know i just cant picture the concavity

Answer 5

sor wherever the slope is decreasing = concave down

Answer 6

!!!

Answer 7

you should have started with that :P

Answer 8

(–4, –2) U (2, 4)

Answer 9

understanding comes from bringing the whole picture into clarity... if i started with that u would have the answer but not the understanding ;P

Answer 10

thanks for the help!

Answer 11

np, gud luck ;)

Answer 12

when dy/dx = 0 gives the x values for the max and min plug in y to get the value

"short cut" use the 2nd derivative if positive then you have a min if negative you have a max
max concave down and min concave up