Let $y(x)=(1+x)\left(1+x^2\right)\left(1+x^4\right)\left(1+x^8\right)\left(1+x^{16}\right) \text {. }$ Then $y^{\prime}-y^{\prime \prime}$ at $x=-1$ is equal to [JEE Main 2023, 25 Jan (Shift 1)]

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Let \(y(x)=(1+x)\left(1+x^2\right)\left(1+x^4\right)\left(1+x^8\right)\left(1+x^{16}\right) \text {. }\) Then \(y^{\prim…

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