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 November 10th, 2017, 01:13 PM #1 Member   Joined: Oct 2016 From: Slovenia, Europe Posts: 52 Thanks: 5 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): Wolfram Mathematica Symbolab: Last edited by skipjack; November 10th, 2017 at 05:02 PM.
 November 12th, 2017, 01:11 PM #2 Senior Member   Joined: Feb 2016 From: Australia Posts: 1,600 Thanks: 546 Math Focus: Yet to find out. Why do you think it's wrong? It's a decaying exponential.
 November 13th, 2017, 02:31 PM #3 Math Team   Joined: Jan 2015 From: Alabama Posts: 3,244 Thanks: 887 How many decimal places are you allowing for the answer? $\int_{10.3}^\infty e^{-39.1(x- 10.3}dx$ $-\frac{1}{39.1}\left[e^{-39.1(x- 10.3)}\right]_{10.3}^\infty$ $-\frac{1}{39.1}\left(0- 1\right)= \frac{1}{39.1}= 0.02557$

 Tags integrals, mathematica, solving, wolfram, wrong, wrongly

### solving integrals

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