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visits member for 1 year, 11 months
seen Jul 28 at 19:26

Jun
21
asked Can nodes of Gaussian quadrature shift range?
Apr
1
comment How to solve integrate(exp(x^2)) from 0 to 1 using by Numerical integration/Gauss-Legendre Quadrature?
Thanks a lot sir.
Apr
1
accepted How to solve integrate(exp(x^2)) from 0 to 1 using by Numerical integration/Gauss-Legendre Quadrature?
Apr
1
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)
Apr
1
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.
Mar
31
asked How to solve integrate(exp(x^2)) from 0 to 1 using by Numerical integration/Gauss-Legendre Quadrature?
Oct
19
awarded  Supporter
Oct
19
accepted Can the direction of Contour Integral be affect to the result of integration?
Oct
18
revised Can the direction of Contour Integral be affect to the result of integration?
edited tags
Oct
18
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?
Oct
18
asked Can the direction of Contour Integral be affect to the result of integration?
Oct
17
revised Why do we use only upper half plane to do Residue Integration?
added 5 characters in body
Oct
17
awarded  Student
Oct
17
comment Why do we use only upper half plane to do Residue Integration?
@Marie ok, i improved my question already.
Oct
17
awarded  Editor
Oct
17
revised Why do we use only upper half plane to do Residue Integration?
added 371 characters in body
Oct
17
asked Why do we use only upper half plane to do Residue Integration?
Oct
4
awarded  Scholar
Oct
4
accepted How many ways to evaluate $1 + e^{-x} + e^{-2x} + e^{-3x} + \ldots$ to $(e^x - 1)\cdot(e^{-x} + 2e^{-2x} +3e^{-3x} + \ldots)$
Oct
4
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?