Question

MEDAL! *question in pic file below*

Answer 1

@ganeshie8

Answer 2

what do you think ?

Answer 3

Nope. Keep in mind the given graph is NOT f(x). It is f'(x)

Answer 4

Nope. By asking "what do you think", I don't mean to make a guess... I was expecting some explanation/justification for why you pick a certain option. Without that I wont know what exactly you're finding difficult about the problem :/

Answer 5

kk, i think its "f is increasing on the interval from x=-3 to x=1" because the graph

Answer 6

Look at the graph between x=-3 and x=1
it stays above x axis. that means f'(x) is positive, yes ?

Answer 7

yes

Answer 8

+

Answer 9

what does f'(x) > 0 tell you about f(x) ?

Answer 10

f'(x) > 0, which means the first derivative is geater than 0 tells us that f(x) is "increasing"

Answer 11

good question, again that graph is f'(x)
that highlighted part is above x axis, so that means positive, yes ?

Answer 12

f'(x) is positive means f(x) is increasing.

Answer 13

kk

Answer 14

for example :
f(x) = x^2
f'(x) = x^3/3

f'(x) is positive when x > 0, so f(x) will be increasing when x > 0

Answer 15

:) thank u!

Answer 16

yw! takes some time to fully make sense of these..