October 9, 2015

Homework Help: Graphing - Trigonometry

Posted by Sam on Tuesday, October 29, 2013 at 6:24pm.

Below is the graph of y = a cos(bx+c)+d, where a, b, and c are positive, and c is as small as possible. Find a + b + c + d.

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The link is to a screenshot of the graph. (without spaces)

I'm unsure of how to solve - I tried it and got y = 2 cos (2/3x + 5pi/2) + 1 but it is would be appreciated, thanks.

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