Which of the following functions have the maximum value unity ? - Vidyadip

MCQ

Which of the following functions have the maximum value unity ?

A
$sin^2 x - cos^2 x$
B
$\frac{{\sin \,2x\,\, - \,\,\cos \,2x}}{{\sqrt 2 }}$
C
$-\frac{{\sin \,2x\,\, - \,\,\cos \,2x}}{{\sqrt 2 }}$
✓
All of the above

✓

Answer

Correct option: D.

All of the above

d

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