Question

State the subintervals of (-2,2) on which the derivative, f'(x), is positive.

Answer 1

Need help!! working on this for a few hours. State the subintervals of (-2,2) on which the derivative, f'(x), is negative. please see the attached file.

Answer 2

f'(x) is negative in (-2,0) U (1,2) for the slope is negative
and positive for (0,1)

Answer 3

did not work :(

Answer 4

is it not right

Answer 5

the positive is right though

Answer 6

oh sorry it is (-2,-1) U (-1,0)U(1,2)

Answer 7

nice!! it worked

Answer 8

thank you

Answer 9

again it is not right it is (-2,-1)U(-1,0]U(1,2)

Answer 10

the positive is[0,1)

Answer 11

the positive is right (0,1)

Answer 12

can i ask you one more question?

Answer 13

no it must be closed interval because the function is defined for 0

Answer 14

State the subintervals of (-5,0) on which the derivative of F is positive.

Answer 15

[-5,-4)U(0,3)

Answer 16

it says that is not correct

Answer 17

again sorry engaged in something else it is just [-5,-4)

Answer 18

oh sorry the questions was for (-5,4) instead of (-5,0)

Answer 19

for that it is (-5,-4)

Answer 20

did not work

Answer 21

that is not right