Teaching OSSTET Mock Test 2023 Mathematics Trigonometry Trigonometric Functions

फलन f(x) = cos 2x – sin 2x, x ϵ R की सीमा क्या है?

1
\([-\sqrt{2}, \sqrt{2}]\)
2
\([-\sqrt{2}, {2}]\)
3

[-1,1]

4
[0,1]
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