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Input:
nthd(sin(x))
Write:
`nthd(sin(x))`
Compute:
$$d^n/dx^n sin(x)$$
Output:
$$d^n/dx^n sin(x)== sin(\frac{1}{2}\ n\ \pi +x)$$ Result: $$sin(\frac{1}{2}\ n\ \pi +x)$$
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