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Sep
22
answered How to restore function attributes to default
Sep
22
reviewed Close Applying N to the roots found by Solve gives complex numbers when the roots are real
Sep
21
comment Intersection of two vector spaces
To give a useful answer, it would help to know what have you tried and what you mean by "manually" computing matrices (i.e., does a sequence of Mathematica commands count as "manual"?).
Sep
21
answered Biot-Savart Law/Magnetostatics Solution
Sep
20
comment How to “Copy as Unicode” from a Notebook?
On my Mac this answer works fine (including the copy button) in Mathematica versions 8 and 10.
Sep
20
revised How to solve time dependent Optical Bloch Equations for a three level system?
plot added
Sep
20
revised How to solve time dependent Optical Bloch Equations for a three level system?
Clarifications
Sep
20
revised How to solve time dependent Optical Bloch Equations for a three level system?
deleted 5 characters in body
Sep
20
revised How to solve time dependent Optical Bloch Equations for a three level system?
Added DSolve result
Sep
20
revised How to solve time dependent Optical Bloch Equations for a three level system?
Numerical approach
Sep
20
answered How to solve time dependent Optical Bloch Equations for a three level system?
Sep
20
revised How to solve time dependent Optical Bloch Equations for a three level system?
some formatting added
Sep
20
reviewed Close Assign output of solve to variables
Sep
19
comment Export[] performance
On my Mac, with Mathematica version 8, the h5 export is still faster than the BinaryWrite: the result were: {0.575183,test.h5}, and {0.588023,Null} respectively.
Sep
19
comment Problems with plotting the imaginary part of an eigenvalue
Yes, I would answer the same way. Maybe you can add that k=0 is a point of degeneracy, which causes the kink in the plot: the eigenvalue is not required to follow a differentiable curve through such a point. However, you could define the "correct" plot by switching between eigenvectors 3 and 4 at k=0.
Sep
19
answered Export[] performance
Sep
19
awarded  Generalist
Sep
18
revised Solution to a T+U = E equation
Greek edited
Sep
18
revised Solution to a T+U = E equation
Warn against subscript
Sep
18
comment Solution to a T+U = E equation
I've added some more explanation and also addressed your original InverseFunction approach in my edited answer.