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1h
comment Why does Mathematica report that $\int_1^\infty\frac{\sin(\sqrt{x})}{\sqrt{x}}dx$ = $2\cos(1)$?
@Vadim, my second comment hints on how to show this, you see… ;)
2h
revised Plotting a function based on complicated integral
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2h
comment Reproduce image effect in Mathematica
Have you seen this?
2h
revised UnitaryMatrixQ function not returning true for a unitary matrix
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2h
revised Off[FinancialData::notent] fails on first run but works thereafter
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2h
revised Why does Mathematica report that $\int_1^\infty\frac{\sin(\sqrt{x})}{\sqrt{x}}dx$ = $2\cos(1)$?
added 3 characters in body
3h
comment Why does Mathematica report that $\int_1^\infty\frac{\sin(\sqrt{x})}{\sqrt{x}}dx$ = $2\cos(1)$?
(Although, making the substitution $x=u^2$ does reveal the trouble.)
3h
comment Why does Mathematica report that $\int_1^\infty\frac{\sin(\sqrt{x})}{\sqrt{x}}dx$ = $2\cos(1)$?
Do not use the bugs tag until your observation has been verified to be a bug. Also, please include your version number and OS. Finally, there's no question here that I see; SE is supposed to be used for asking questions.
3h
revised Why does Mathematica report that $\int_1^\infty\frac{\sin(\sqrt{x})}{\sqrt{x}}dx$ = $2\cos(1)$?
edited tags; edited tags
3h
revised Definite integral evaluation
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4h
revised What are some useful, undocumented Mathematica functions?
added 14 characters in body
4h
answered How can I get the solutions of $x^n-x-t=0$ in hypergeometric form?
Jan
30
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17
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awarded  Nice Answer
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awarded  Nice Answer
Dec
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revised Colour of lines in ContourPlot3D
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Dec
18
comment Fast arithmetic on matrix elements
Permanent[] is a built-in function, but it is not very fast. You might want to look at the solutions here.