Project Euler: Problem 1, Multiples of 3 and 5
Area of an equilateral triangle
Rounding off numbers to n decimals
Find the dimensions of a matrix
vectorization in N
A quadrant matrix
Find the elements of a matrix according to a defined property.
Create a matrix X, where each column is a shifted copy of the vector v
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
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