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Is it possible to express (mathematical) infinity, positive or negative, in C#? If so, how?
Started by Alex on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
Public const double NegativeInfinity = -1.0 / 0.0; public const double PositiveInfinity = 1.0 / 0.0;
double.PositiveInfinity
double.NegativeInfinity
float zero = 0; float positive = 1 / zero; Console.WriteLine(positive); // Outputs "Infinity" float negative... .
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I am currently reading the Algorithm Design Manual , but my mathematical notation has become a little rusty.
What does
mean?
Started by DanDan on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
It....
It means "n choose k", or in this case, "a choose b" .
Binomial coefficient ? (also, see combination )
Combination.
Combination is the first thing that comes to mind...but without context, there are probably other meanings for the same notation .
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There are many methods for representing structure of a program (like UML class diagrams etc.). I am interested if there is a convention which describes programs in a strict, mathematical way. I am especially interested in the use of mathematical notation...
Started by supermedo on
, 10 posts
by 10 people.
Answer Snippets (Read the full thread at stackoverflow):
There....
[...]
I believe on the types.
Are inconvenient for expressing the structure since the structure is often not expressable in default mathematical by affiliating programs with the abstract mathematical theories that enable them work.
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I'm an Android Developer and as part of my next app I will need to evaluate a large variety of user created mathematical expressions and equations. I am looking for a good java library that is lightweight and can evaluate mathematical expressions using...
Started by CSharperWithJava on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Update: Compared to JEval 0.9.4:
this ran >100 times faster on a small benchmark I tried, on my MacBook the .jar is 6 ... .
I wrote this many years ago; it has the qualities you mention and it's still getting used in new educational applets, apparently .
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Does anyone know of such a library that performs mathematical optimization (linear programming, convex optimization, or more general types of problems)? I'm looking for something like MATLAB, but with the ability to handle larger problems. Do I have to...
Started by Zach Scrivena on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
(Mathematical structures, linear.
You may want to look at JScience , it looks pretty complete .
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I have a range of data that I have approximated using a polynomial of degree 2 in Python. I want to calculate the area underneath this polynomial between 0 and 1.
Is there a calculus, or similar package from numpy that I can use, or should I just make...
Started by celenius on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
If you're integrating only polynomials, you don't need to represent a general mathematical function.
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Hi,
Could someone please help and tell me how to include IEEE mathematical functions in MSVC++6? I tried both and , but I still get these errors:
- error C2065: 'ilogbf' : undeclared identifier
- error C2065: 'scalbnf' : undeclared identifier
thanks in...
Started by mk on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
But I understand ....
I am going to leave my answer in place as a cautionary tale, and because it may have some educational value .
I have come to realize that I haven't properly addressed this question at all .
Edit 3: Hopefully this will be my final edit.
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I know there are many algorithms to evaluate expressions, for example
By Recursive Descent Shunting-yard algorithm Reverse Polish notation But is there any way to evaluate any mathematical expression using C# .net reflection? or other modern .net technology...
Started by ArsenMkrt on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
You'll need to include these namespaces:
System.CodeDom.Compiler; System.CodeDom; Microsoft.CSharp; System.Reflection; Here's the code:... .
I wrote you some example usage code.
The CodeSnippetCompileUnit class does basically this.
It's certainly possible.
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I am working on a Math related web page and am looking for a solution to writing Mathematical equations easily onto a web page. There are several solutions readily available to me at the moment:
Use LaTeX and publish them on my web page as images. Use...
Started by EnderMB on
, 8 posts
by 8 people.
Answer Snippets (Read the full thread at stackoverflow):
I don't know what you're using to host....
It displays an image in the web browser, but you can still see the LaTeX source if you edit the page .
I've been using the LaTeX plugin for the Confluence wiki to write equations on the web (well, on the intranet) .
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I have an array of array like below with all numeric values. I want to perform some mathematical operations with these values.
1) Add and print the values of each array elements. e.g.
sum $VAR1 = sum1 sum $VAR2 = sum2
2) Add all the values from each variables...
Started by Octopus on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
I'd do it this way:
use List::Util qw(sum) my @sums = map { sum(@{$_}) } @array; my $sum_of_sums = sum(@sums); my @percentages = map { $_ / $sum_of_sums } @sums;
(edit: In your code, you needed to dereference the arrayref at $input[0].)
Dave's answer... .
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