Reputation
30,100
Next tag badge:
91/100 score
35/20 answers
Badges
1 41 103
Impact
~291k people reached

22h
awarded  equation-solving
1d
comment NDSolve and assuming
on use of assumptions: DSolve and NDSolve do not use assumptions themselves. I can't find the reference on this now, but this came up before. Here is dsolve-will-not-apply-assumption question on assumptions with DSolve
1d
revised Does the equation have two roots?
update finding on maple fsolve
1d
answered Does the equation have two roots?
2d
comment Roots of Whittaker W function
@Guesswhoitis. I did try it before commenting. They are tiny and they all went away after Chop. V 10.1
2d
comment Roots of Whittaker W function
One issue is that they all have a nonzero imaginary component To clean, use Chop it is floating point computation noise.
2d
comment How can I mark a point on a slider control?
@glance the tick is the control variable used to control everything. a control variable has to appear in the Manipulate expression somewhere to be tracked.
2d
comment Are there any open source projects related to signal processing
You can't buy the DSP app anymore. I have it since I bought it long time ago, but it does not run anymore on new versions of M. Check this site which I think is the origin of that application from long time ago by Brian Evans.
2d
comment Are there any open source projects related to signal processing
There used to be Mathematica DSP application, but most of that functionality are integrated to Mathematica now (not open source ofcourse ;)
2d
comment Is there a way to separate variables between multiple notebooks?
@ShutaoTang I do not know. But if you ask at Mathworks Answers forum or at comp.soft-sys.matlab someone there should know.
2d
comment How to draw a revolute joint and Prismatic joint?
I have not done prismatic joint in Mathematica yet, but first one CDF in this table here has revolute joints. Used cylinders with different sizes basically.
May
18
comment Discrepancy in the series expansion of $\log(z/(z-1))$ in Mathematica 5
Yes, I think M should have the sign function there. I verified with Maple, Maple gives this: series(log(z/(z - 1)), z=0); ln(z)+I*csgn(I*z)*Pi+z+(1/2)*z^2+(1/3)*z^3+(1/4)*z^4+(1/5)*z^5+.... notice the I*csgn(I*z) there, which is explained more here
May
18
comment ParametricNDSolve without initial condition?
But help shows how to use the result? The examples all show how to use it. Is the question about how to use the result or something else?
May
18
revised Choosing FEM element type and mesh refinement
removed name from update not needed
May
18
revised How to make Mathematica show matrices and vectors nicely
added
May
18
answered How to make Mathematica show matrices and vectors nicely
May
18
comment Choosing FEM element type and mesh refinement
fyi, I copied the code from the notebook. To do this in the future, convert the cells to InputForm and then copy as text and paste here as code.
May
18
revised Choosing FEM element type and mesh refinement
copied code from notebook link
May
17
revised How can I mark a point on a slider control?
clean
May
17
answered How can I mark a point on a slider control?