Need help with trigonometry graphs?

Mathematics
Tutor: None Selected Time limit: 1 Day

Oct 18th, 2015

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

Looking at this graph we can see that it intersects the origin, so we know we are using the sine function. Next we look at the max value of y and find it to be 4, so we know the sine function must be multiplied by 4. Next we see the function peaks at x=pi/4, we know that sin(x) normally peaks at x=pi/2. Knowing that we need our x in this function to equal pi/2, we will multiply x by 2 inside the sine function. In the end we are left with y=4sin(2x). The 4 makes the range larger, the 2 makes the oscialtions occur more frequently.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 18th, 2015

Thank you for your quick response it really helped me!! Also, is the point that the wave is passing thru pi?

Oct 18th, 2015

Yes, the last point that the wave passes through is pi, and gald I could help out.

Oct 19th, 2015

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Oct 18th, 2015
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Oct 18th, 2015
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