Tarea19-5.4B: Problem 18 Previous Problem Problem List Next Problem 1 point) To

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Tarea19-5.4B: Problem 18 Previous Problem Problem List Next Problem 1 point) To get a better look at the graph, you can click on it. The curve above is the graph of a sinusoidal function. It goes through the points -13,-4) and (1,-4). Find a sinusoidal function that matches the given graph. If needed, you can enter ?-3.1416 as 'pi' in your answer, otherwise use at least 3 decimal digits. Preview My Answers Submit Answers You have attempted this problem 0 times You have 7 attempts remaining. Email instructor

Explanation / Answer

(-13,-4) and (1,-4)
So, max = 4
min = -4

So, A = (max - min)/2 is 4

And D = (max + min)/2 = 0

Period = 1 - (-13) = 14

So, B = 2pi/period
B = 2pi/14
B = pi/7

And clearly this is negative cos graph
shifted 1 unit right
So, c = 1

Now,
y = Acos[B(x - C)] + D

y = -4cos[pi/7*(x - 1)] + 0

y = -4cos(pi/7*(x-1))

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