Questions tagged [expression-form]
The expression-form tag has no usage guidance.
29
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How to convert RowBoxes into list of math expressions?
I have following RowBox which represents Step By Step solution of undefined integral
...
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3
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1
answer
184
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How to convert the string "A^0" into the expression Superscript[A,0]?
I'm looking for a procedural way to define a symbol for a variable, based on a string. For instance, ToExpression["A^B"] gives us ...
- 622
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2
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78
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Conjugate symbol
Is there a way to make mathematica display Conjugate[z] as z* or something like that? It gets very verbose when there are multiple conjugates in an expression, it becomes hard to read.
- 1,273
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101
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Apply ReplaceAll to a whole notebook
I'm an avid tauist (tauday.com) and I don't like the fact that Mathematica displays equations with $\pi$ instead of $\tau=2\pi$. I know that I can "force" it to display $\tau$ by e.g.
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PlotLegends parameter with subscript and multiple of other parameter in Mathematica
PlotLegends -> LineLegend[{Style[Subscript[ω, i] t == 0, Black]]
When I use this command in Mathematica 13.2, I get ...
2
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2
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91
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Showing Real and Imaginary parts of a Complex expression without reordering
I know Mathematica has a strong tendency to reordering expressions, but this is too much and there must be a way. So I'll give you an extremely simple example.
I define this ...
- 153
1
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1
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94
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What does Sin[2. x] mean? [closed]
I am working with a particularly long function that, when I want to evaluate it at a certain $x$, shows:
As you can see there are expressions herein of the form Sin[2. x] or Cos[2. x]. What do these ...
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163
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How to simplify complex Trigonometric expression in mathematica? [closed]
The expression which I need to simplify in mathematica into simplest form
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- 135
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179
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How to Simplify safely
Mathematica often writes simplied expressions with -1 first followed by any variables (eg. -1+x).
However I want to write it as ...
- 1,897
3
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1
answer
46
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Rationalizing only specific terms in an expression
How can I change an expression like
A = (-1. a)/(x + y) - (2.1 b)/(x + y) + 4.1 + 2. x + (3. r s)/(x + y)
so that -1. a becomes ...
- 445
1
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1
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InputField and TreeForm problem
I want to use the expression enter by the user and form the Tree,
so I did TreeForm[test] as the picture show but it's not working.
But if I do it manually, it works.
Can anyone explain to me why ...
- 93
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97
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Fullsimplify not working perfectly [closed]
Here I am using the below code for a simplification.
...
- 1,245
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101
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Converting an equation to the form $ax+by=c$
I have a linear equation that comes as a result of applying orthogonality on a non-homogeneous boundary condition with two unknowns $C_1$ and $C_2$. Can someone help me to express this equation in the ...
- 297
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47
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Canonical order for expressions that applied in Sort? [duplicate]
Sort[list] sorts the elements of list into canonical order.
As an example for sorting expressions: Sort[{y, x^2, x + y, y^3}] ...
- 641
1
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0
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184
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ToExpression["string",TeXForm] doesn't work
I want to convert LaTeX equation to Mathematica code.
I want to use ToExpression["x", TeXForm] to input some equation in Mathematica.
However, my mathemtica doesn't ...
- 23
14
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645
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How can I obtain a complete list of the kinds of atomic expressions in the Wolfram Language using only the language itself?
I mean, Wolfram is a language--it's words are infinitely combinable. According to answers to my last question, the only way I can find out if an expression is atomic is actually use the expression.
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- 347
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194
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What's the difference between 56 and Integer[56]? [duplicate]
I'm trying to grasp how to Wolfram Language uses symbolic expressions for everything. The concept of doing so makes sense to me, but the language doesn't behave how I predict.
I understand how ...
- 347
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3
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123
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Find the number of true's in a TrueQ expression
How can I find how many times the code:
Table[TrueQ[FractionalPart[Sqrt[n]] == 0], {n, 1, m, 1}]
Gives the value True back for a variable $m$?
So, we know that ...
- 23
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3
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487
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How to simplify an expression by substitution?
Sometime Solve and DSolve give a finial form of the solution, which is fine in may applications. However, in some cases, one may ...
- 1,229
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113
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How do I force a fractional coefficient to exclude non-numeric symbols?
Short version of question: Suppose I have an expression:
expression = a+3b;
When I divide by 2, I get:
expression/2
It is ...
- 2,307
2
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1
answer
123
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SubsuperscriptBox and SuperStar
I have a notational reason (using the Notations package) to have some symbols display as C*60 (with the 60 lined up under the *). Internally, this is represented in Mathematica as:
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- 2,307
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58
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How to get a logical expression instead of a value [closed]
Suppose I want to write out the terms of the binomial distribution:
Sum[ Binomial[n, k] q^k (1 - q)^(n - k), {k, 0, n} ]
This obviously gives me 1, however I ...
- 123
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2
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71
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Make two expressions look alike OR check that they are the same
I would like to compare my Mathematica calulations with the results from a paper.
I get:
...
- 3,093
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1
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381
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How can Mathematica take a prefactor in front of the relation
I have the following term in an expression
$$\frac{q_B' \sin2q_B}{P_B Q_B^2}(2 Q_B P_B - \sin^2 q_B \Pi_B) q_1 q_1'$$
the prime denotes differentiation w.r.t a coordinate. Some additional ...
user49048
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108
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How to send Map[Plus[1, #] &, {1, 2, 3}] to Mathematica from C# via IKernelLink?
Here is a piece of my code
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4
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234
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Determine whether some expression contains a symbol doing nothing?
I have expression like this:
expr = xuyz;
then
Head[expr] = xuyz
But I wanted the product of four factors, so it should ...
0
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0
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42
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How to derive closed-form expression for a variable in an equation? [duplicate]
I have an equation
$q = \frac{f + 2 f^2 + 3 f^3}{1 + 2 f + 3 f^2 + 4 f^3}$ and want Mathematica to derive a closed-form expression for real solution to $f$. I've tried running the following code:
<...
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756
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3
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943
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Using FortranForm for d0 notation? [duplicate]
When I use FortranForm, it changes 2*a^2 into 2*a**2 which is fine, but if I want the expression in a form such as,
2.d0*a**2
which represents an integer to be ...
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