Question

Which of the following is a sinusoid?
A. x^2 + y^2=1
B. x^2/3 +y^2/6 =1
C. y=^3 sq root x
D. y=cos (x) -2

Answer 1

@amorfide Could you show me how to do this?

Answer 2

hmmm the sinusoid is pretty obvious there
if you don't watch out, it may bite you

Answer 3

isn't a sinusoid a blood vessel lol

Answer 4

What do I do though?

Answer 5

@jim_thompson5910

Answer 6

think about the hint I posted

Answer 7

Use sin?

Answer 8

@jim_thompson5910 Could you help show me how to use sin with this problem?

Answer 9

cosine is basically a form of sine, just shifted

hence the name coSINE

Answer 10

and all sine functions are sinusoidal

that's where the "sinus" portion comes from (from sine)

Answer 11

But what about I supposed to do?

Answer 12

@Directrix Can you help me?

Answer 13

Look here and you will know the answer.

http://www.mathwords.com/s/sinusoid.htm

Answer 14

@shaylapage ^^

Answer 15

Thank you so very much, that honestly did help. I work better through pictures and stuff so thanks again!! @Directrix