Aaron de Windt
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 Sep16 awarded Tumbleweed Sep9 asked Is the Hessenberg form of a matrix unique? Apr23 asked Can different quaternions represent the same orientation? Mar15 revised Does $\frac{1}{\oint\frac{ds}{t}}=\oint\frac{t}{ds}$ added 22 characters in body Mar15 comment Does $\frac{1}{\oint\frac{ds}{t}}=\oint\frac{t}{ds}$ I have worked out an equation and I ended with the integral $\oint\frac{ds}{t}$ in the denominator. I would like to bring it to the numerator, just so I can save some vertical space on my sheet. Mar15 asked Does $\frac{1}{\oint\frac{ds}{t}}=\oint\frac{t}{ds}$ Mar14 accepted $\iiint _E\;e^{\sqrt{x^2+y^2+z^2}}\;dV$ where E is enclosed by the sphere $x^2+y^2+z^2=9$ in the first octant. Mar13 revised $\iiint _E\;e^{\sqrt{x^2+y^2+z^2}}\;dV$ where E is enclosed by the sphere $x^2+y^2+z^2=9$ in the first octant. added 739 characters in body Mar13 asked $\iiint _E\;e^{\sqrt{x^2+y^2+z^2}}\;dV$ where E is enclosed by the sphere $x^2+y^2+z^2=9$ in the first octant. Mar9 comment How to do interpolation using the newton basis? Thanks. My error was indeed that I forgot to write the $x(x-1)$ basis function in the end. But the matrix method is really easy if you want to learn it. In each column you calculate the value using the same basis function and fill in a different $x$ value in each row. This will form a triangular matrix since the ones above the diagonal will all be zero. Then add the $y$ values to form a augmented matrix. Solve it. And you should have the constants that correspond to each basis function. Mar5 asked How to do interpolation using the newton basis? Mar4 accepted Integrating $\sin^2(x)$ using imaginary numbers. Mar4 comment Integrating $\sin^2(x)$ using imaginary numbers. @L.F. I know this it's the best way to do it, I was just interested on how to do it using imaginary numbers and get to know their properties better. Mar4 comment Integrating $\sin^2(x)$ using imaginary numbers. @julien Thanks, I'm testing it now. Mar4 comment Integrating $\sin^2(x)$ using imaginary numbers. How should I get it in imaginary numbers. But julien already answered it. Mar4 comment Integrating $\sin^2(x)$ using imaginary numbers. ok. how is it then? Mar4 comment Integrating $\sin^2(x)$ using imaginary numbers. No imaginary tag? Mar4 asked Integrating $\sin^2(x)$ using imaginary numbers. Feb26 awarded Scholar Feb26 awarded Supporter