For given input matrix a, rotate it by 90 degrees and find the sum of the diagonals.
1 2 3 4
5 6 7 8
8 10 12 -2
-1 -3 -5 -7
Project Euler: Problem 10, Sum of Primes
Find out sum of all elements of given Matrix
MATLAB Basic: rounding
surface areas of a cylinder
convert the number to binary format & count digits
Nth root of a number
Raise each element to the power of its index in a matrix
Basic Quadratic Equation
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