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Jun
22
answered Using Apply on a function with multidimensional input
Jun
22
comment Is there any Mathematica functionality enabling its use for the blind?
Is reading out really helping a blind person? Wouldn't they want to "read" code like on an Refreshable Braille Display? So maybe somekind of BrailleForm would be a start next to Speak?
Jun
21
comment Draw from a given list according to empirical distribution
A couple of data samples and maybe initial attempts would improve the question.
Jun
21
comment Draw from a given list according to empirical distribution
Great if that helped. Btw you may also upvote...hint,hint. ;-)
Jun
21
revised Draw from a given list according to empirical distribution
Changed ages to be Integers which might be more realistic for the case.
Jun
21
answered Draw from a given list according to empirical distribution
Jun
21
comment How to elegantly map multiple functions over a matrix?
+1. Great to be reminded for what use case Outer was conceived of.
Jun
20
comment How convert list of numbers to list of points on x-axis?
That is why I sometimes go for the named function as it is so close to mathematics. While beatifully compact I do find other solutions quite unfortunate with regard to transparency and ease of understanding.
Jun
20
comment How convert list of numbers to list of points on x-axis?
I did with 1 Mio random numbers in the vector and the pure function was faster by around 25 % though in absolute duration that did maybe not matter that much (around .13 secs for my machine for the Thread-sokution).
Jun
20
revised How convert list of numbers to list of points on x-axis?
added 262 characters in body
Jun
20
comment How convert list of numbers to list of points on x-axis?
+1. Thread certainly is a beautiful solution. Nevertheless the performance advantage of a pure function seems hard to beat?
Jun
20
comment Simplification of exponential
+1. I had not seen your answer when I posted my comment.
Jun
20
answered How convert list of numbers to list of points on x-axis?
Jun
20
comment Simplification of exponential
This does work ComplexExpand[E^(-2*t*g)*Sqrt[E^(4*t*(g + 2*I*l))]] // FullSimplify[#, {g > 0, t > 0, l > 0}] &.
Jun
20
awarded  Nice Answer
Jun
20
revised Show More Rows of Dataset
corrected spelling
Jun
12
comment Solving $\frac{dx}{dt} = A \frac{ (1-x)}{(t-t^2)} - \frac{(B*x -C*x^2)}{(t-t^2 )*(t-x)}$
+1. Excellent answer, thank you.
Jun
11
comment Solving $\frac{dx}{dt} = A \frac{ (1-x)}{(t-t^2)} - \frac{(B*x -C*x^2)}{(t-t^2 )*(t-x)}$
In the link provided in the OP (Mathematics SE) a poster hinted at the DE being an Abel ODE which might be solved in closed form by substitution which was also shown in the post there. Those kind of ODE are also known to Mathematica as is documented here‌​. Should Mathematica come up with a closed form solution or can other CAS come up with one? Also I wonder why Version 10.0 gave a solution?
Jun
10
comment Solving $\frac{dx}{dt} = A \frac{ (1-x)}{(t-t^2)} - \frac{(B*x -C*x^2)}{(t-t^2 )*(t-x)}$
It does indeed not seem to evaluate at all (10.1) and thus the solution obtained in the link you gave (coming from Version 10.0) makes one wonder. Have you checked whether the given solution is correct? If it is then Version 10.1 might have introduced a bug.
Jun
10
comment Solving $\frac{dx}{dt} = A \frac{ (1-x)}{(t-t^2)} - \frac{(B*x -C*x^2)}{(t-t^2 )*(t-x)}$
Welcome! Note that C is an internally predefined symbol so I would advise to use lower case variable names.