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If y=x^{\cos\,x} then find \dfrac{dy}{dx}.
x^{\cos\,x-1}\cos\,x-x^{\cos\,x}\sin\,x\,\text{ln}\,x
x^{\cos\,x-1}\cos\,x+x^{\cos\,x}\text{ln}\,x
x^{\cos\,x-1}\cos\,x
x^{\cos\,x-1}\cos\,x-x^{\cos\,x}\,\sin\,x
x^{\cos\,x}\text{ln}(\cos\,x)
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