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- - **Is it possible that Wolfram Mathematica is solving integrals wrongly?**
(*http://mymathforum.com/calculus/342736-possible-wolfram-mathematica-solving-integrals-wrongly.html*)

Is it possible that Wolfram Mathematica is solving integrals wrongly?I think this integral calculation in Mathematica is wrong. I am quite sure, that Mathematica works ok, while I do not understand something. Please help me. Graphs (the red one is under the blue and the green): http://image.ibb.co/dyD4xb/graphs.jpg Wolfram Mathematica http://image.ibb.co/jCWPxb/Mathematica.jpg Symbolab: http://image.ibb.co/mTthiG/symbolab.jpg |

Why do you think it's wrong? It's a decaying exponential. |

How many decimal places are you allowing for the answer? $\int_{10.3}^\infty e^{-39.1(x- 10.3}dx$ $-\frac{1}{39.1}\left[e^{-39.1(x- 10.3)}\right]_{10.3}^\infty$ $-\frac{1}{39.1}\left(0- 1\right)= \frac{1}{39.1}= 0.02557$ |

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