Question

Which cosine function has maximum of 0.5, a minimum of -0.5, and a period of 2pi/3?

Answer 1

Any example or do we have to create one?

Answer 2

Would the answer choices help?

Answer 3

(1/2)*cosin(3x)

Answer 4

They would of been nice but zz got it .-.

Answer 5

amplitude*cosine(((2pi)/period)x)

Answer 6

Aw, it's the thought of helping that counts.

Answer 7

no, I helped I count.

Answer 8

jk

Answer 9

lol

Answer 10

do you see how I did it?

Answer 11

.5 a.k.a 1/2 *3 from the fraction?

Answer 12

the one half is the amplitude because the min is -1/2 and max is 1/2

Answer 13

That makes more sense

Answer 14

at least you understand :D

Answer 15

if it were -1, 1 we would have the normal cosine
1*cos(x)

Answer 16

ok so amplitude is easy
now the inside part (which has no affect on the amplitude)
normal is cos(1*x) has period of 2pi right?

Answer 17

Would it be y=cos 2(theta)/3?

Answer 18

I already told you the answer...

Answer 19

Just making sure.

Answer 20

its (1/2)cos(3x)

Answer 21

or could it be written as y=.5cos3(theta)?

Answer 22

it could but fractions are preferred :P

Answer 23

lol, the choices they gave me didn't come with one.

Answer 24

Thank You everyone!