1. \(y'=2x-3\)
2. \(y'=4x^3+4x\)
3. \(y=\dfrac{x+1}{2x-\dfrac{1}{2}}=\dfrac{2x+2}{4x-1}\Rightarrow y'=\dfrac{2\left(4x-1\right)-4\left(2x+2\right)}{\left(4x-1\right)^2}=\dfrac{-10}{\left(4x-1\right)^2}\)
4. \(y'=x^2+4x+1\)
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