Lösung 1.2:2b

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The whole expression consists of two parts: the outer part, " \displaystyle e raised to something",


\displaystyle e^{\left\{ \left. {} \right\} \right.}


where "something" is the inner part \displaystyle \left\{ \left. {} \right\} \right.=x^{2}+x. The derivative is calculated according to the chain rule by differentiating \displaystyle e^{\left\{ \left. {} \right\} \right.} with respect to \displaystyle \left\{ \left. {} \right\} \right. and then multiplying by the inner derivative \displaystyle \left( \left\{ \left. {} \right\} \right. \right)^{\prime }, i.e.


\displaystyle \frac{d}{dx}e^{\left\{ \left. x^{2}+x \right\} \right.}=e^{\left\{ \left. x^{2}+x \right\} \right.}\centerdot \left( \left\{ \left. x^{2}+x \right\} \right. \right)^{\prime }


The inner part is an ordinary polynomial which we differentiate directly:


\displaystyle \frac{d}{dx}e^{\left\{ \left. x^{2}+x \right\} \right.}=e^{\left\{ \left. x^{2}+x \right\} \right.}\centerdot \left( 2x+1 \right)