Question

Can someone help, I need to find an equation for this graph.

Answer 1

asinx
a is the highest amplitude

Answer 2

Period is double, will have to work out, its not simply asinx.

Answer 3

3sin(t/2)

Answer 4

i dont think so one complete cycle is done in 2pi

Answer 5

I believe its 4pi for the graph, one complete cycle is one up and one down.

Answer 6

nop one complete cycle is done in 2pi

Answer 7

its a sin wave and its done in 2pi it same like circle one complete round is 2pi

Answer 8

this is why i am confused, lol

Answer 9

You can have a sinusoid that ossicaltes faster/slower, which changes the period.

Answer 10

ya i know .. u cant answer right if u dont know how the normal regular wave looks like

Answer 11

You can plug the numbers in and work it out, shouldnt be too hard, asinx wouldnt work in this case either way.

Answer 12

i know but one period is comeplete in 2 pi not 4 pi

Answer 13

its periodic with two pi, and so is, 3sin(t/2) or x in this case.

Answer 14

it however oscilates faster

Answer 15

ok sorry read the graph wrong.

Answer 16

couldnt saw where the 2pi is

Answer 17

yup, no probs

Answer 18

And it ossilates slower in this case, not faster, a correction on what I said previously.

Answer 19

so is it y=3sin(5x) ? or am I way off?

Answer 20

nope just y= 3sin(x/2)

Answer 21

try plugging in numbers as well, that should help you see it better. Otherwise because it is slower than a reguar sinusoidal, you can simply put in the half there.

Answer 22

ah, thank you.

Answer 23

yup no problem