Question

Somebody help me with these two questions?

Answer 1

Do you know how does the graph of f(x) = cos(x) lookes like?

Answer 2

you can see the range is between -1 and 1
and the domain is all real numbers since the graph goes on forever.

Answer 3

so the domain is : all real numbers for cosine?

Answer 4

i think yes

Answer 5

@Soumyadeep

Answer 6

Yes!

Answer 7

what about the range is it true or false? @Soumyadeep

Answer 8

Obviously false! because it goes from -1 to 1 not <= 0

Answer 9

+1

Answer 10

exactly the range is shoudl from -1 to 1