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22h
answered High-Precision NSolve
1d
revised Why do big-O terms disappear in definite integrals since Mathematica 9?
added 100 characters in body
1d
comment Why do big-O terms disappear in definite integrals since Mathematica 9?
good call, see edit..
1d
revised Why do big-O terms disappear in definite integrals since Mathematica 9?
added 399 characters in body
1d
answered Why do big-O terms disappear in definite integrals since Mathematica 9?
1d
answered how to speedup subpixel registration
2d
comment how to speedup subpixel registration
@SimonWoods, thanks but not available (v10 think I guess?). Incidentally, setting the option "Transformation" -> "Translation" yields utter garbage results (9.0.1), even though the automatic setting clearly uses a simple translation..
2d
revised Understanding a piecewise function generated by Mathematica
added 141 characters in body
2d
revised how to speedup subpixel registration
added 577 characters in body
2d
comment how to speedup subpixel registration
@nikie Thanks! you should post that as an answer. BTW FindMinimum produces a slightly less accurate result for some reason, but for present purpose that's not an issue.
Oct
24
asked how to speedup subpixel registration
Oct
24
revised how to find numerical zeros of $f(z)$ in a compact complex domain
added 241 characters in body
Oct
24
answered how to find numerical zeros of $f(z)$ in a compact complex domain
Oct
23
comment Copy files existing in different directories under the same directory
reference.wolfram.com/language/ref/CopyFile.html
Oct
22
answered Simplifying vector expressions
Oct
22
comment Simplifying vector expressions
the fundamental problem is that mathematica does not recognize u as a vector , and there is unfortuantely no simple work around. You should look at this: reference.wolfram.com/language/tutorial/SymbolicTensors.html but before going too deep be aware only certain functions recognize symbolic vector concepts (D in particular does not )
Oct
22
comment Is 450 lines of code in one block too much?
FWIW it works ok with v9/windows. (I just copied the code from the post).
Oct
22
comment Strange integration
$RecursionLimit = Infinity; causes it to keep running..not optimistic it will yield a result though.
Oct
22
comment Strange integration
FYI the expression simplifies to: (Cos[x]-Sinc[x])/(Cosh[x]+Sinh[x]-1). Same result on integration though :(
Oct
22
revised simplifying the range of two definite integrals
added 106 characters in body