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seen Dec 20 at 18:57

Dec
1
awarded  Popular Question
Nov
3
revised Where put or edit an init.m to add menu commands?
edited tags
Oct
29
answered Numeric-type attributes for symbols (analog of NumericFunction)
Oct
29
comment High-Precision NSolve
Does NSolve[SetPrecision[f1[x]==f2[x], 100], x, WorkingPrecision->100] work? (On 8.0.0.0, your version gives no warning and a result of {{}}, so I can't check myself).
Oct
29
answered How to extract arguments of functions in an expression?
Oct
28
comment Is this an error/bug with Plot Command?
@ChipHurst: Both seem not to be available at Mathematica 8; however I've found them in the web documentation. CubeRoot clearly wouldn't be a replacement for realpower, covering only the very special case $x^{1/3}$. Surd (which IMHO is a contender for the most unintuitively named Mathematica function) gives the more general case $x^{1/n}$; while it would certainly be a better building block for realpower, it's however not a full replacement because it doesn't handle e.g. $x^{2/3}$ (which is the case from the question).
Oct
23
comment Can't figure out how to apply these functions repeatedly
@Guest: OK, I think now it does what you meant.
Oct
23
revised Can't figure out how to apply these functions repeatedly
fixed code due to misunderstanding
Oct
23
comment Can't figure out how to apply these functions repeatedly
Ah, OK, I misunderstood that. I'll change the code accordingly.
Oct
23
answered Can't figure out how to apply these functions repeatedly
Oct
23
comment Is this an error/bug with Plot Command?
@Anoldmaninthesea.: In complex numbers, $x^{1/3}$ is indeed not the inverse of $x^3$. For example, $((-1)^3)^{1/3}\ne -1$. Actually, for even exponents, the same is already true in the real numbers, where $((-1)^2)^{1/2} = 1 \ne -1$. Only for positive $x$ the two functions are inverse to each other.
Oct
23
comment Is this an error/bug with Plot Command?
@Anoldmaninthesea.: Actually, it is not the representation, but the definition of the complex power. It's just easiest described in the polar representation (most probably, internally the formula $x^y=\exp(y\ln x)$ is used, together with an appropriate branch cut for $\ln x$). However see my edit for a function that does what you want (but probably has a lot of room for improvement).
Oct
23
revised Is this an error/bug with Plot Command?
added a way to get the real power
Oct
23
answered Limit not giving expected result
Oct
23
revised Is this an error/bug with Plot Command?
fixed broken formulas
Oct
23
answered Is this an error/bug with Plot Command?
Oct
23
awarded  Nice Question
Oct
18
comment C compiler options passed by Mathematica
Did you try them separately?
Oct
18
comment C compiler options passed by Mathematica
Does it work if you prefix the space in "Program Files" with a single backslash? Or maybe use "CompilerInstallation" -> "\"C:...bin\""?
Oct
18
accepted Plotting on the Raspberry Pi