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Which of the following graphs represents the function y = 2 cos(x – π∕2) – 1?

Which of the following graphs represents the function y = 2 cos(x – π∕2) – 1?-example-1
User Nicocesar
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1 Answer

1 vote

Answer:

B

Explanation:

maximum value is reached if cos (x-π/2) = 1, so the maximum value y = 2-1 = 1

minimum value is reached if cos (x-π/2) = -1, so the minimum value y = -2-1 = -3

User Nunzia
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