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OpenStudy (anonymous):
Can you help me solve this
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OpenStudy (anonymous):
find local max and min of f(n) = sin^4 + cos^4
OpenStudy (experimentx):
i don't see variable part.
OpenStudy (anonymous):
\[f(n) = \sin^4x + \cos^4x\]
OpenStudy (experimentx):
the left hand side says that it must be function of n, you should have n at right hand side too
OpenStudy (anonymous):
okay sorry i forgot about that
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