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Jan
12
revised Using Manipulate with a control variable for selective recalculation
added few comments
Jan
12
revised Using Manipulate with a control variable for selective recalculation
add more notes
Jan
12
answered Using Manipulate with a control variable for selective recalculation
Jan
12
revised DensityPlot Increase Information
add another image
Jan
12
answered DensityPlot Increase Information
Jan
12
comment Why to do parentheses change the results of a calculation?
@raxacoricofallapatorius its does If one uses exact numbers. (1 + 1*^20) - 1*^20 gives 1
Jan
12
revised Trying to graph trajectory function in Mathematica? Won't Graph?
added 213 characters in body
Jan
11
revised Trying to graph trajectory function in Mathematica? Won't Graph?
added 683 characters in body
Jan
11
answered Trying to graph trajectory function in Mathematica? Won't Graph?
Jan
11
revised Breaking up long equations in TeXForm
add one more point
Jan
11
revised Counting 'False' values at the ends of a list
No need for the False, it will work without it as is
Jan
11
comment Awkward Two-Point Boundary Value ODE
You ODE syntax is not really right. You write D[uall[x, en, k], x, x], but $u$ is not a function of en and k. These are paramters, not independent variables. Otherwise, you'd be talking about a partial differential equation. You should just write u''[x] and that is it. As for the NDSolve itself, look at Method shooting and startingInitialConditions. See the NDSolve advanced documentations for examples of boundary values for second order ODEs using the shooting method.
Jan
11
answered Counting 'False' values at the ends of a list
Jan
11
revised Breaking up long equations in TeXForm
added 773 characters in body
Jan
11
answered Breaking up long equations in TeXForm
Jan
11
comment Breaking up long equations in TeXForm
There is no answer to this, since it is impossible to do what you want, without manual editing of the Latex code generated, and using various Latex packages and methods as needed such as breqn, mathtools and its splitfrac, or amsmath and split env, and many other modification to the generated code. This is a Latex issue and nothing that Mathematica can do about it. If you have Latex code as \frac{very very long line}{x} then there is nothing but manual edit that can break it, including manual splitting if needed. The answer to your question is: There is no solution to this within Mathematica
Jan
10
comment Graphics Function Definition Style (Using SubValues vs. DownValues)
see mathematica.stackexchange.com/questions/544/… and this mathematica.stackexchange.com/questions/7999/…
Jan
10
comment Display functions without dependence?
This rule does not work for all functions of the independent variable. For example a[t] Exp[t] gives a Exp[t]. But may be that is ok with the OP, just wanted to point it out just in case.
Jan
10
comment Fourier Series of “Split” Defined Function
@ErikVesterlund For that, you can simply convert it to real. Like this: FourierSeries[x, x, 2]; ExpToTrig[%] which gives 2 Sin[x] - Sin[2 x]
Jan
10
comment Issues with $MachineEpsilon
The wiki web page linked to above has an implementation for finding $\epsilon$ using many different languages, is it possible to show an implementation using Mathematica as well? May be then it can be added to the wiki page along with all the other languages?