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 Jun21 asked Can nodes of Gaussian quadrature shift range? Apr1 comment How to solve integrate(exp(x^2)) from 0 to 1 using by Numerical integration/Gauss-Legendre Quadrature? Thanks a lot sir. Apr1 accepted How to solve integrate(exp(x^2)) from 0 to 1 using by Numerical integration/Gauss-Legendre Quadrature? Apr1 comment How to solve integrate(exp(x^2)) from 0 to 1 using by Numerical integration/Gauss-Legendre Quadrature? ok now i can get the answer of my program the same with you already but if i change the boundary of integral from (-3, 3) to (0, 1) the result of my program is 0 but In actually it should be 1/2*sqrt(pi)*erf(1) Apr1 comment How to solve integrate(exp(x^2)) from 0 to 1 using by Numerical integration/Gauss-Legendre Quadrature? sorry sir, Why do you miss w weight on line Gauss-Legendre Quadrature formula and can you write one more line before line 3(0.000146211+0.0352118+0.568889+0.0352118+0.000146211)=1.91881 i didn't know where did these numbers come from. just add one more line thank you. Mar31 asked How to solve integrate(exp(x^2)) from 0 to 1 using by Numerical integration/Gauss-Legendre Quadrature? Oct19 awarded Supporter Oct19 accepted Can the direction of Contour Integral be affect to the result of integration? Oct18 revised Can the direction of Contour Integral be affect to the result of integration? edited tags Oct18 comment Can the direction of Contour Integral be affect to the result of integration? For integration, i can understand that it can be affect to sign of result because boundary might change (e.g. "from infinity to -infinity" to "from -infinity to infinity") but for Residue Theorem there is only summation How can it affect? Oct18 asked Can the direction of Contour Integral be affect to the result of integration? Oct17 revised Why do we use only upper half plane to do Residue Integration? added 5 characters in body Oct17 awarded Student Oct17 comment Why do we use only upper half plane to do Residue Integration? @Marie ok, i improved my question already. Oct17 awarded Editor Oct17 revised Why do we use only upper half plane to do Residue Integration? added 371 characters in body Oct17 asked Why do we use only upper half plane to do Residue Integration? Oct4 awarded Scholar Oct4 accepted How many ways to evaluate $1 + e^{-x} + e^{-2x} + e^{-3x} + \ldots$ to $(e^x - 1)\cdot(e^{-x} + 2e^{-2x} +3e^{-3x} + \ldots)$ Oct4 comment How many ways to evaluate $1 + e^{-x} + e^{-2x} + e^{-3x} + \ldots$ to $(e^x - 1)\cdot(e^{-x} + 2e^{-2x} +3e^{-3x} + \ldots)$ how about this e^{-x}+2e^{-2x}+3e^{-3x}... What sort of series?