The Square Norm of the Function $f ( x ) = \cos ( 3 x )$

question 21

Multiple Choice

The square norm of the function $f ( x ) = \cos ( 3 x )$ on the interval $[ 0 , \pi / 2 ]$ is

• A) 1
• B) \(\pi\)
• C) \(\pi / 2\)
• D) \(\pi / 4\)
• E) 0

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