Question

The graph of the sine curve below is of electromagnetic energy that represents red light:
What function accurately represents the sine curve for red light?

Answer 1

@amistre64

Answer 2

@mtbender74

Answer 3

THis is just a change of the period of a normal sine curve.

WHen you change the period, you need dived 2pi by the new period.

in your case, the new period is 640...so the coefficient of the x term would be 2pi/640...which simplifies...

Answer 4

to pi/320 right?

Answer 5

yep

Answer 6

:) ok. I didn't divide by 2 now I know. :) Thanks!

Answer 7

Can I ask you one more question? This is the Last one promise :)

Answer 8

do you remeber factoring a difference of squares? that what you have on the top and the bottom...if you FOIL them out, you'll see what i mean...


what do you get when you FOIL out the top and bottom?

Answer 9

sorry I'm working through it. :P

Answer 10

np.. :)