(1)’求导等于多少啊?(x^2+1)((x)'-(1)')-((x^2)'+(1)')(x-1)怎么等于(x^2+1)-2x(x-1)?

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(1)’求导等于多少啊?(x^2+1)((x)'-(1)')-((x^2)'+(1)')(x-1)怎么等于(x^2+1)-2x(x-1)?
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(1)’求导等于多少啊?(x^2+1)((x)'-(1)')-((x^2)'+(1)')(x-1)怎么等于(x^2+1)-2x(x-1)?
(1)’求导等于多少啊?
(x^2+1)((x)'-(1)')-((x^2)'+(1)')(x-1)怎么等于(x^2+1)-2x(x-1)?

(1)’求导等于多少啊?(x^2+1)((x)'-(1)')-((x^2)'+(1)')(x-1)怎么等于(x^2+1)-2x(x-1)?
等于0
常数求导都等于0.