what is "igamma" exactly
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hello my friends I try to use the following integral:
q=int(exp(-0.0245*x)*x^-0.9755,0,99.2)
the answer is:
q=(7^(951/1000)*2000^(49/2000)*(gamma(49/2000) - igamma(49/2000, 1519/625)))/7
whats wrong with this solution. I have tried some numerical integration, but the answers are not my desired solution. could you please give me some appropriate ways to solve this kind of integration. Thank you
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John D'Errico
il 24 Set 2015
igamma is the incomplete gamma function. It is also available in MATLAB proper as gammainc. As far as I can see, that solution seems at least reasonable.
What is not to your liking about the result? Don't just say that you don't like a result. WHAT don't you like? All that we can do is guess. Here is my guess.
vpa(q)
ans =
44.062223875034479994516141234239
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