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1d
comment NDSolve: Indeterminate expression 0. ComplexInfinity encountered?
You can not use the prime notation with function of more than one varialble. ( Is z2'[Ω, t] supposed to be with respect to t or omega? )
1d
comment NDSolve: Indeterminate expression 0. ComplexInfinity encountered?
in eqtheta I assume the ltheta should be l theta..? Its a good idea to copy your own code back and make sure it runs. After fixing up I get a different error than you report.
1d
comment Help on using Solve
You should strive to use exact numbers such as 1/2 rather than floating point numbers such as 0.5.
1d
comment Why does Mathematica report that $\int_1^\infty\frac{\sin(\sqrt{x})}{\sqrt{x}}dx$ = $2\cos(1)$?
The Bugs tag applies imo.
Feb
9
revised To find a limit cycle with period 1 in NDSolve
added 219 characters in body
Feb
9
answered To find a limit cycle with period 1 in NDSolve
Feb
9
comment Import 'file not found' error. Why?
@JasonB I have "Insert File Path" on my 10.1 / redhat linux. (and it works..) Funny I so rarely look at the menus I didn't even know it was there..
Feb
9
comment Plot markers for monthly data
possible dup mathematica.stackexchange.com/q/7408/2079
Feb
9
comment Fitting bivariate data using FindFit
note the original expression (after fixing syntax issues) gives this same result if you supply a good initial guess for k : FindFit[data, a + b*Exp[-k*x], {a, b, {k, 20}}, x]
Feb
9
comment Import 'file not found' error. Why?
Another approach to this is to evaluate SystemDialogInput["FileOpen"] and navigate to the file in the system dialog, and review the string that gets returned.
Feb
9
comment Import 'file not found' error. Why?
I'd guess that accent e is causing the problem. Try this: FileNames["hours.dat", "C:\\", Infinity]. It will take a while but should return the full path with non-ascii characters escaped as needed.
Feb
9
comment numerical integration errors
an alternate approach is to make your parameter dependence explicit when you define the symbols, ie define s[d_] = , etc
Feb
9
comment How to Minimize an NIntegral
You don't need NIntegrate at all, Integrate provides an analytic result
Feb
9
comment Creating a module consisting of i variables
you should learn the syntax for Module (It needs two arguments, you have one) before moving on to more challenging things.
Feb
8
comment How to generate two group of $n$ random numbers in $U(0,1)$ such that sum of these two groups equal?
The edit didn't help at all. The ambiguity lies in the requirement /meaning of randomness. Also can you explicitly say the size of the set required. (10000 sets of pairs of length 4 ? )
Feb
7
awarded  Necromancer
Feb
5
revised How to generate two group of $n$ random numbers in $U(0,1)$ such that sum of these two groups equal?
added 375 characters in body
Feb
5
answered How to generate two group of $n$ random numbers in $U(0,1)$ such that sum of these two groups equal?
Feb
5
revised Symbolic vs numerical integration
added 145 characters in body
Feb
5
revised Symbolic vs numerical integration
added 35 characters in body