Finding a sinusoidal function

Mathematics
Tutor: None Selected Time limit: 1 Day

Jul 9th, 2015

Thank you for the opportunity to help you with your question!

at  x = 0   y =1

at x =1   y =0

at x =-1   y = 0

this is characteristics of Cos function

hence the required function is y = cos (x)

Please find the solution enclosed here with .. In case of any doubt please feel free to ask… Do not forget to best my answer… If you are having some other problem please feel free to contact me for quick & quality services..
Jul 9th, 2015

Thanks for helping me out! When I first posted this pic the info didn't attach well with it..I apologize..

This graph has points going through -5,0 and 1,0 (that looks to me to be the full period) What is the sinusoidal function of this particular graph?

Jul 9th, 2015

actually x values must be in angle terms  like 0°, 30°, 45° .... etc

as we know cos 0 =1 , cos 60 = 0.5 and cos 90 = 1 

based on that I have answered that its a cosine function ....


Jul 9th, 2015

Hmm, here's some more info for you to help me out. 

I'm using formula y=A sin (B(x-c))+D

D looks to equal 0 since the midpoint is on the x-axis.

And amplitude looks to be 1

I know that to find B I must use 2pi/absolute value of B to find the period. Hopefully this helps.

Jul 9th, 2015

Doing my own math I've got

y=cos(x(2pi/7))

it's very close to the points -5,0 and 1,0 but not quite...

Jul 9th, 2015

In my view the coefficients should be as follows

A = 1

B = Pi

C = -1/2

D = 0

y = 1 sin Pi(x+1/2) +0

Jul 9th, 2015

y = cos( pi x)

looks more appropriate

Jul 9th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Jul 9th, 2015
...
Jul 9th, 2015
Feb 22nd, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer