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Mar
14
comment How to Integrate trivial products of DiracDelta
don't we need to make some assumption on f to eval this? Suppose f[x]=1/(DiracDelta[1 - x] DiracDelta[x])
Mar
14
comment Numerical integration's speed
do they get the same result?
Mar
13
comment Assumptions and Conditions in Integrate Function in Mathmatica
FYI your Assumptions only apply to the outermost Integrate. Try setting $Assumptions (or better make it one triple integral). (cant test here,,) Also if all else fails you can wrap the whole thing in Simplify with your assumptions as an argument.
Mar
13
comment Range errors when plotting solutions of systems of equations
Ahh.. Reduce shows the solution which is just a line. b==-c==+/-Sqrt[1-a^2]
Mar
13
comment Range errors when plotting solutions of systems of equations
I was going to suggest making a scalar expression, (a^2+b^2-1)^2+()^2+()^2 ==0, however there does not appear to be any solution ( or only a single point , or very small region, so contourplot3d doesn't work )
Mar
13
comment Range errors when plotting solutions of systems of equations
@JacobBond you should work the word "simultaneously" into the question..
Mar
13
comment Range errors when plotting solutions of systems of equations
The docs are not absolutely clear on this but I think ContourPlot3D can only handle a single scalar equality.
Mar
13
comment FEM: how to choose FEM element type
consider every single example in the docs is either 3d tets or 2d triangles...
Mar
13
comment How do I solve for the roots of $\sin(x) - x^2=0$?
it would be might helpful if the Solve/NSolve warning msg suggested trying the domain Reals..
Mar
13
comment Constantly rotating 3d contour plot (ideally as a .gif)
I'd strongly encourage you to find a much simpler example to work with. This one is horrifically slow.
Mar
13
comment Constantly rotating 3d contour plot (ideally as a .gif)
possible dup: mathematica.stackexchange.com/questions/28866/….
Mar
13
comment Exporting pdf with a precise page dimension in metric units, rather than printer points
my opinion this is not a duplicate. The issue is I think very specific to pdf and I would suggest editing your title to reflect that.
Mar
13
comment How to do this triple integral?
you should not have the underscores in the last expression
Mar
12
comment Function to find minimum element in array
the curly brackets {} wrapping your "function" code are a basic error (unless you intend to output a one element list..). Make those () and terminate the For with a semicolon and this works (not pretty but it works.. )
Mar
12
comment Calculating eigenvalues of a large matrix takes a long time
FWIW mma v9 actually throws a warning that clearly provides the answer to this question. ...consider using N on the matrix ...
Mar
12
comment plot sum of two function
need to type 15 char to provide the worlds shortest answer : "+"
Mar
12
comment Exporting pdf with a precise page dimension in metric units, rather than printer points
I suspect PDF out from mathematica is just a wrapper around EPS. EPS in turn fundamentally has its size defined by a whole-point BoundingBox. (you might try exporting eps, manually tweaking the boundingbox with decimal values and see if corel recognizes it )
Mar
12
comment how to use InputField function within the manipulate function
this is not an "answer", you should edit your original question to include this content and then delete this answer..
Mar
11
comment Interact with external program
a linux named pipe approach is given here: stackoverflow.com/a/6468874/1004168. For some reason mathematica throws a noopen error for me however.
Mar
11
comment Interact with external program
I think StartProcess is what you need. ( I don't have v10 either to try it ..).