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visits member for 1 year, 6 months
seen Jul 31 at 23:55

Apr
23
asked Can different quaternions represent the same orientation?
Mar
15
revised Does $\frac{1}{\oint\frac{ds}{t}}=\oint\frac{t}{ds}$
added 22 characters in body
Mar
15
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.
Mar
15
asked Does $\frac{1}{\oint\frac{ds}{t}}=\oint\frac{t}{ds}$
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