Q.
The maximum and minimum values of the function f:R→R defined by f(x)=5sinx+3cosx+π2+8 for all x∈R are respectively
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a
6,10
b
8, -8
c
-7, -15
d
1, -15
answer is A.
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Detailed Solution
f(x)=5sinx-3sinx+8=2sinx+8-1≤sinx≤1 -2≤2sinx≤2 6≤2sinx+8≤10
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