7.1 Integration By Parts/20

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://en.wikipedia.org/api/rest_v1/":): {\displaystyle \int_{0}^{1} \left(x^{2}+1\right)e^{-x}dx }

${\begin{aligned}u&=x^{2}+1\quad dv=e^{-x}dx\\[2ex]du&=2xdx\qquad v=-e^{-x}\\[2ex]\end{aligned}}$

Failed to parse (Conversion error. Server ("https://en.wikipedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle {\begin{aligned}&=(x^{2}+1)(-e^{-x}){\bigg |}_{0}^{1}-2\int _{0}^{1}(-e^{x})(x)dx\\[2ex]\end{aligned}}}

Failed to parse (Conversion error. Server ("https://en.wikipedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle {\begin{aligned}u&=x\quad dv=-e^{-x}dx\\[2ex]du&=dx\qquad v=e^{-x}\\[2ex]\end{aligned}}}

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://en.wikipedia.org/api/rest_v1/":): {\displaystyle \begin{align} &= (x^{2}+1)(-e^{-x})\bigg|_{0}^{1} - 2\left[(x)(e^{-x})\right]\bigg|_{0}^{1} - \int_{0}^{1} (e^{-x})dx \\[2ex] &= -2e^{-1}+1 - \frac{2}{e} + 2(-e^{-1}+e^{0}) \\[2ex] &= -\frac{2}{e} + 1 - \frac{2}{e} - \frac{2}{e} + 2 \\[2ex] &= -\frac{6}{e} + 3 \end{align} }