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Application of Derivatives
Xam Idea
CBSE
Grade 12

Question:

Find local maximum and minimum values of $f(x) = \sin^4 x + \cos^4 x, 0 < x < \pi/2$.

Step-by-Step Solution

Key Concept: Min value 1/2 at \pi/4, Max value 1 at 0 and \pi/2.
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Correct Answer:
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