Math, asked by gandidhanusha2, 1 year ago

extreme values of cos square x + cos 2 x

Answers

Answered by anshikam04

2

Cos x varies from -1 to 1..
Cos ^2 x varies from 0 to 1
Cos 2x varies from -1 to 1
Hence extreme values of function is -1 and 2

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