the maximum value of 3 sin^2 X+5 COS^2 X
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Answer:
3 is the maximum value
Explanation:
using the identity
sin*2x+cos*2x=1
3sin*2x+5cos*2x
3sin*2x+5(1-sin*2x)
5-2sin*2x
(since maximum value of sinx is 1)
5-2(1)*2=3
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