Evaluate
-\frac{-ax^{x}+a\times 4^{x}-2^{x+1}-2}{2^{x}-1}
Differentiate w.r.t. x
\frac{a\ln(x)\times \left(2x\right)^{x}-a\ln(x)x^{x}+a\times \left(2x\right)^{x}-ax^{x}-\ln(2)a\times \left(2x\right)^{x}+2\ln(2)a\times 4^{x}+\ln(2)a\times 2^{3x}-2\ln(2)a\times 8^{x}-4\ln(2)\times 2^{x}}{\left(2^{x}-1\right)^{2}}
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