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Question Number 71972 by device4438043516@gmail.com last updated on 23/May/20

Commented by MJS last updated on 23/Oct/19

$$\mathrm{syntax}\mathrm{unknown}$$$$u=u\left(x\right)$$$$v=v\left(x\right)$$$$\frac{d}{dx}\left[u\times v\right]=u^{\prime }\times v+u\times v^{\prime }$$$$\mathrm{or}\mathrm{easy}\mathrm{to}\mathrm{keep}\mathrm{in}\mathrm{mind}:$$$${\left(uv\right)}^{\prime }=u^{\prime }v+{uv}^{\prime }$$

Commented by benjo last updated on 25/Dec/19

$$\mathrm{what}\mathrm{is}\mathrm{this}\mathrm{sir}?$$

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