1
vote
1answer
379 views

Project Euler $420$ [closed]

So the question is: We define $F(N)$ as the number of the $2\times 2$ positive integer matrices which have a trace less than $N$ and which can be expressed as a square of a positive integer matrix ...
2
votes
1answer
320 views

How to get Euler angles with respect to initial Euler angle

I have a sensor which gives me Euler angles (roll,pitch,yaw). There is a baseline value of Euler angle (assume it is $5,10,15$) at the beginning.I want to calibrate from this baseline values all ...
2
votes
1answer
784 views

Project Euler 215 - Solving with Sparse Matrices and Vector Multiplication

I wrote a program to solve Project Euler Problem #215 (see below for description) using memoization, and when I got access to the PE forums, I saw everyone else wrote programs that also used dynamic ...