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The function , ; Maximum value of is:
The function $f(x) = \sin x + \cos x$, $x \in (0, \pi/2)$; Maximum value of $f(x)$ is:
- (a)1
- (b)2
- (c)$\frac{1}{\sqrt{2}}$
- (d)$\sqrt{2}$
Answer
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From ISC 2021 Specimen Mathematics Paper 1, question 1(ix).