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OpenStudy (anonymous):
Identify the maximum and minimum values of the function y = 3 cos x in the interval [-2π, 2π
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OpenStudy (mathteacher1729):
@lebronjames -- Welcome to open study! :D Do you happen to have a graphing calculator available?
OpenStudy (anonymous):
yes but my teacher dosent want us to use a calculator
OpenStudy (anonymous):
You want to find the amplitude of the function, so the "a" value. Here, a=3. So the highest it goes is 3 and the lowest is -3
OpenStudy (anonymous):
so the maximum is (3,-2.9) and the minimum is (-3,2.9)
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