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Feb
9
comment How to group and join points
Replace ListPlot by ListLinePlot
Feb
9
reviewed Approve Boundary Conditions that depend on each other
Feb
9
revised Compute intermediate totals using Select and Plus in a list
added 80 characters in body
Feb
9
comment Compute intermediate totals using Select and Plus in a list
@Xavier_B I edited, does the new thing work?
Feb
9
revised Compute intermediate totals using Select and Plus in a list
deleted 24 characters in body
Feb
9
revised Compute intermediate totals using Select and Plus in a list
added 27 characters in body
Feb
9
answered Compute intermediate totals using Select and Plus in a list
Feb
9
answered RegionPlot with different boundaries
Feb
6
reviewed Approve NDeigensystem returns complex non-hermitian error for the calculation of vibrations of a cantilever
Feb
5
comment How to generate two group of $n$ random numbers in $U(0,1)$ such that sum of these two groups equal?
Note that this approach doesn't cause the sums to follow the UniformSumDistribution[n], because the smallest sum is chosen every time. QuantilePlot[Sort[Table[(lists = RandomReal[1, {20, 2}] // Transpose; lists = lists (Min[Total /@ lists]/Total@# & /@ lists); Total[First[lists]]), {200}]], UniformSumDistribution[20], Method -> {"ReferenceLineMethod" -> "Diagonal"}]
Feb
5
comment How to solve for the eigenvalue in matrix?
Then look up the function Eigenvalues in the documentation
Feb
5
comment How to solve for the eigenvalue in matrix?
Do you need to do this by hand or using Mathematica?
Feb
3
answered Linear fit with conditional noise distribution
Feb
3
comment Reverse element in nested list
Either list[[All, {2,1}]], or more generally list[[All, Reverse[Range[Length[First[list]]]]]]
Feb
3
comment Linear fit with conditional noise distribution
What is the interpretation of x and y (in order to decide whether the residuals should be the vertical error in the y-direction of the euclidean distance between (x,y) and its projection onto the fitted line)
Feb
3
comment Linear fit with conditional noise distribution
I would start to fit a and b for each list and then look at the residuals to fit the distribution for the e_i(x), and then refit a and b according to this noise distribution, and then iteratively continue.
Feb
3
awarded  Informed
Jan
31
reviewed Approve How to numerically solve a 1-d time-independent Schrodinger equation?
Jan
31
comment Problems with MinimalBy, MaximalBy, SortBy
In the documentation, look up the first example under "possible issues" on the Sort page
Jan
30
answered Construct all possible sets of pairs