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Which of the following is true

Posted: Thu Jul 14, 2022 9:26 am
by answerhappygod
a) Value of \(\frac{d^m (Sin⁡(nx))}{dx^m}\) is always positive for m=0, 1, 4, 5, 8, 9… for 0 < nx < π⁄2 and n<0
b) Value of \(\frac{d^m (Sin⁡(nx))}{dx^m}\) is always positive for m=2, 3, 6, 7, 10, 11… for 0 < nx < π⁄2 and n>0
c) Value of \(\frac{d^m (Sin⁡(nx))}{dx^m}\) is always positive for m=0, 1, 4, 5, 8, 9… for 0 < nx < π⁄2 and n>0
d) Value of \(\frac{d^m (Sin⁡(nx))}{dx^m}\) is always positive for m=2, 3, 6, 7, 10, 11… for 0 < nx < π⁄2 and n<0