Let $y$ be an implicit function of $x$ defined by ${x^{2x}} - 2{x^x}\cot \,y - 1 = 0$. Then $y'(1)$ equals - DASH

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Question

Let $y$ be an implicit function of $x$ defined by ${x^{2x}} - 2{x^x}\cot \,y - 1 = 0$. Then $y'(1)$ equals

$1$

$\log \,2$

$-\log \,2$

$-1$

Solution

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