Question

Can anyone help me with this?

Answer 1

One way to try to figure this out is to plug in the given value for x shown on each graph and see what the expression gives you. For instance, when x = 2pi
what are the values of sin(4x) and cos(2x/3)?

Answer 2

is it 2a) last one & 2b) VI?

Answer 3

\[y=\cos \frac{2}{3}x\]
is VI

Answer 4

I think sin(4x) is VIII

Answer 5

okay thanks i got it now.. :)

Answer 6

i tried putting in the x values & got it..

Answer 7

Yes. That is correct. You should calculate the period of the function and identify which one is a sin and which is a cosine.

Answer 8

yea..