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| visits | member for | 2 years, 1 month |
| seen | Apr 13 at 6:26 | |
| stats | profile views | 27 |
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Aug 23 |
comment |
Mathematica 8 can not solve Eigenvalue problem You will probably want to use NSolve instead of Solve. NSolve gives out numeric answers. |
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Jul 27 |
comment |
For what functions does $\int_{-\infty}^{\infty}x \sin(f(x))\,dx$ converge? Now that you say it Sin(x^3+x) does become Cos(x^3) Sin(x) + Cos(x) Sin(x^3) which helps a ton. Thanks. I guess I was mostly hoping for some nice sufficient condition for a broad class of functions. |
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Jul 26 |
comment |
For what functions does $\int_{-\infty}^{\infty}x \sin(f(x))\,dx$ converge? Yes. I was thinking of well behaved differentiable functions. By "grows fast enough" I assumed that a large enough Big O is what was necessary to guarantee that the integral converges. To make the issue more concrete, what polynomials f cause the integral to converge? |
