New answers tagged symbolic
0
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Showing that the difference between two CDF functions is positive when CDFs are symbolic expressions
The documentation clearly says that Positive works only for numbers. This explains the output obtained by you. That you want can be done as follows.
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- 23.2k
1
vote
Accepted
Adding symbolic functions and manipulating results of DSolve
$Version
(* "13.3.1 for Mac OS X ARM (64-bit) (July 24, 2023)" *)
Clear["Global`*"]
eqn = y''[x] + w^2 y[x] == A Cos[q x];
Ask for the ...
- 149k
4
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How to solve the non-linear over-determined equations symbolically?
Use SolveAlways instead of Solve as follows
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- 41.1k
2
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4
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Function to generate analytic solution of StandardDeviation of a list given sublists
Here is one way to do so. Note that this is a data manipulation exercise and doesn't imply any ability to make inferences with the resulting standard deviation.
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- 39.6k
0
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Finding the maximum of a symbolic piecewise function
You have to evaluate all parameters. For example,
Maximize[{f[x, -2, 1, 1/3, 4, 2], x >= 0}, x]
{6, {x -> 0}}
It should ...
- 23.2k
2
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Integration involving two DiracDelta with variable limit
Mathematica needs the info t \[Element] Reals !
Using DiracDelta as a limit (see @RolandF's ...
- 47.2k
3
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Integration involving two DiracDelta with variable limit
Approximate the DiracDelta by the normal distribution
Integrate[DiracDelta[z-1 ]/z 1/Sqrt[2 \[Pi] s] E^(-(t-z-1)^2/(2s^2)),
{z,0,t-1}]
$$\fbox{$\frac{\...
- 2,259
3
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1
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Simplify to vectors and matrices
One has to proceed cautiously because Mathematica accepts non-standard algebraic input with vectors and matrices, e.g a.b instead of a.Transpose[{b]] such that dimensions fit for the contraction ...
- 2,259
2
votes
Accepted
How to define linear mappings on a vector space spanned by abstract symbols?
Linearity is defined as f[x_+y_]= f[x]+f[y] and f[lam x_] = lam f[x], where lam is a scalar. ...
- 45.5k
0
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1
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1
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Adding elements to some sublists of unequal length
From the Association universe:
KeyValueMap[Flatten @* List] @ Merge[# &] @ Map[GroupBy[First -> Rest], {a, b}]
{{1, 3, 5,...
- 40.7k
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