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Input:
d(cos(x),x,1.5)
Write:
`d(cos(x),x,1.5)`
Compute:
$$\frac{d^{{1.5}}cos(x)}{dx^{{1.5}}}$$
Output:
$$\frac{d^{{1.5}}cos(x)}{dx^{{1.5}}}== cos(0.75\ \pi +x)$$ Result: $$cos(0.75\ \pi +x)$$
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