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Question
`(x^4 + x^3 + x^2 + 1)/x`
Solution
`d/(dx) ((x^4 + x^3 + x^2 + 1)/x) = d/(dx)(x^3 + x^2 + x + 1/x)`
= `3x^2 + 2x + 1 - 1/x^2`
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