Recent questions tagged math

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math expression evaluation - very fast - with objective-c

i want to evaluate a math expression like y = 2(x * x) + 2. But i need it in a loop, where the x changes ... the loop up ? Thanks a lot ! Chris See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - How can I convert coordinates on a square to coordinates on a circle?

I'm developing an indie video game, and have been operating under the assumption that because the thumbstick on ... limits of my monkey brain. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Multiword addition in C

I have a C program which uses GCC's __uint128_t which is great, but now my needs have grown beyond it. What ... a 4-fold slowdown or better. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Rounding numbers in Sass and adjusting the amount of decimals

Is their a way in sass to change the digit that rounding occurs on, I would like to stop rounding of a ... amount of decimals in the output css See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - How to generate numbers in range with specific average with Python?

For example I would like to generate 22 numbers between 20 and 46 with an average value of 27. And I would like ... don't need to be random. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Mandelbrot Set - Color Spectrum Suggestions?

Recently I started making Mandelbrot set, but I wasn't able to find a good color spectrum. Here's my result ... this: Any Suggestions? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - python nan != nan

Python 2.7.3 (default, Aug 1 2012, 05:14:39) [GCC 4.6.3] on linux2 Type "help", "copyright", ... there any other object which behaves like that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Find number range intersection

What is the best way to find out whether two number ranges intersect? My number range is 3023-7430, now I ... this in any programming language? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Flipping a quaternion from right to left handed coordinates

I need to flip a quaternion from right: x = left to right y = front to back z = top to bottom to left ... back How would I go about doing this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - How to determine if a vector is between two other vectors?

I am looking for a fast and effective way to determine if vector B is Between the small angle of vector A and ... I am fairly sure I did. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - What is the definition for the height of a tree?

I can't seem to find a definitive answer for this, I'm trying to do some elementary proofs on heaps but here' ... to account for an empty tree). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - To make sure: Pumping lemma for infinite regular languages only?

So this is not about the pumping lemma and how it works, it's about a pre-condition. Everywhere in the net you ... we're wrong - or even not. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Finding a point on a line

I know the start and end points on a line segment. For this example say that the line segment has a distance of 5. ... I want to find (0,2) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Javascript max() function for 3 numbers

I need to find the highest number from 3 different numbers. The only thing I've found is max() but you can ... 2 numbers. Whats the best way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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882 views

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math - Writing an algorithm to decide whether a target number can be reached with a set of other numbers and specific operators?

I'm trying to learn more about algorithm design, and I've set myself the challenge of creating a simple game ... with this kind of problem? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - calculate a perpendicular offset from a diagonal line

I am writing a music display program and need to draw a 'slur' between two notes. A slur is a curved line ... , in a NON mathematical form ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Find a tangent point on circle?

Given a line with first end point P(x1,y1) another end point is unknown, intersect with a circle that located ... point T? Thanks in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - 'Difference' between two quaternions

I'm working in Ogre, but it's a general quaternion problem. I have an object, to which I apply ... valid on orientations rather than rotations? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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883 views

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math - How to perform division in Go

I am trying to perform a simple division in Go. fmt.Println(3/10) This prints 0 instead of 0.3 ... different arithmetic operations in Go. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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930 views

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math - Determine the centroid of multiple points

I'm writing a mapping application that I am writing in python and I need to get the lat/lon centroid of ... that is equidistant for everyone. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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973 views

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math - Algorithm to find points that are furthest apart -- better than O(n^2)?

In my program, I have a set of points. For purposes of rescaling, I am searching for the two nodes ... other point Is there something faster? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Calculating if an angle is between two angles

So I am making a little game where I am checking if a character can "see" another where character A can see ... is not between 314 and 404. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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943 views

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math - How to calculate the z-distance of a camera to view an image at 100% of its original scale in a 3D space

How can one calculate the camera distance from an object in 3D space (an image in this case) such that the ... lead me in the right direction! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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770 views

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math - Algorithm to determine non-negative-values solution existance for linear diophantine equation

I am looking for a method to determine if there is a solution to equations such as: 3n1+4n2+5n3=456, where n1, ... pair<MsgType,vector<3,4,5>>. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Bash: evaluate a mathematical term?

echo 3+3 How can I evaluate such expressions in Bash, in this case to 6? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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951 views

1 answer

math - Finding intersection points between 3 spheres

I'm looking for an algorithm to find the common intersection points between 3 spheres. Baring a complete algorithm, a ... , but what ever works. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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math - Sorting a List of 3d coplanar points to be clockwise or counterclockwise

I have a list of 3D points. I know they are all coplanar. I have the center that I want to sort them ... this to handle 3d coplanar points? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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math - Simplest way to solve mathematical equations in Python

I want to solve a set of equations, linear, or sometimes quadratic. I don't have a specific problem, but ... ; perhaps I am missing something. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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