Aaron de Windt
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 Sep 16 awarded Tumbleweed Apr 23 asked Can different quaternions represent the same orientation? Mar 14 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. Mar 13 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 Mar 13 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. Mar 9 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. Mar 5 asked How to do interpolation using the newton basis? Mar 4 accepted Integrating $\sin^2(x)$ using imaginary numbers. Mar 4 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. Mar 4 comment Integrating $\sin^2(x)$ using imaginary numbers. @julien Thanks, I'm testing it now. Mar 4 comment Integrating $\sin^2(x)$ using imaginary numbers. How should I get it in imaginary numbers. But julien already answered it. Mar 4 comment Integrating $\sin^2(x)$ using imaginary numbers. ok. how is it then? Mar 4 comment Integrating $\sin^2(x)$ using imaginary numbers. No imaginary tag? Mar 4 asked Integrating $\sin^2(x)$ using imaginary numbers. Feb 26 awarded Scholar Feb 26 awarded Supporter Feb 26 accepted In partial fraction decomposition, do the terms in the denominator have to be irreducible polynomials? Feb 24 awarded Editor Feb 24 comment In partial fraction decomposition, do the terms in the denominator have to be irreducible polynomials? Thanks for noting the writing mistake. I've corrected it now. Feb 24 revised In partial fraction decomposition, do the terms in the denominator have to be irreducible polynomials? edited body