Question

Let f:R----->R satisfy |f(x)|<=cos^2x for all x€R then the number of roots of equation f'(x)=0 in x€(0,10) is

Answer 1

@michele_laino

Answer 2

@agent0smith

Answer 3

Options are
Exactly 3
Atleast 4
Exactly 4
Atleast 2

Answer 4

@hartnn

Answer 5

is the answer option A ?

Answer 6

@samigupta8

Answer 7

No

Answer 8

@mayankdevnani

Answer 9

great !

Answer 10

Oh hello!!!

Answer 11

It's not great!!

Answer 12

it's great cuz i feel so energetic again

Answer 13

?? In what sense??

Answer 14

again solve the question !

Answer 15

with some more concept

Answer 16

Okay!!

Answer 17

i got the answer !

Answer 18

At least 4 would be correct !

Answer 19

What do you think ? @ganeshie8

Answer 20

@samigupta8 bata naa answer kya h

Answer 21

Last option

Answer 22

yeh kaisa answer h

Answer 23

atleast 4 bhi to ho sakta h

Answer 24

I don't know bt this is ans. !

Answer 25

what ?

Answer 26

thoda socho
atleast 2 matlab exactly 3,exactly 4 and atleast 4 bhi to ho sakta h

Answer 27

i'm sure ATLEAST 4 is correct !

Answer 28

Can u tell me how at least 2 means atleast 4 ..??

Answer 29

At least 2 includes 3 also bt atleast 4 never includes that...

Answer 30

i mean atleast 2 contains exactly 3 !

Answer 31

why exactly 3 isn't our answer ?