Properties with Negative X
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Q.
Solve:
Q. Let f(x)=xcos−1(sin(−|x|)), x∈(−π2, π2), then which of the following is true ?
- f′(0)=−π2
- f′ is decreasing in (−π2, 0) and increasing in (0, π2)
- f is not differentiable at x=0
- f′ is increasing in (−π2, 0) and decreasing in (0, π2)
Q.
Find the value of the trigonometric function