Question

the derivative of an increasing function f(x) must be.
a. strictly positive
b. non negative
c. negative
d. always positive

Answer 1

i feel theres no real answer because its 0

Answer 2

what do you think nenad the answer is E? XD

Answer 3

first derivative must be positive....always and strictly :D

Answer 4

oww hey master where confuse from my before question about function that i draw