Find the intervals in which the function f given by `f(x) = sin x + cos x , 0x` is strictly incr...

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Question From - NCERT Maths Class 12 Chapter 6 SOLVED EXAMPLES Question – 13 APPLICATION OF DERIVATIVES CBSE, RBSE, UP, MP, BIHAR BOARD

QUESTION TEXT:-
Find the intervals in which the function f given by `f(x) = sin x + cos x , 0x` is strictly increasing or strictly decreasing.

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