given three inputs (a, b, c) for the equation a*x^2+b*x+c=0; return 1 if the roots are complex (non zero imaginary), and 0 if they are real.
vectorization in N
Sum of first n terms of a harmonic progression
Number of 1s in a binary string
Back to Basics - Find no. of elements in a matrix?
Sum the squares of numbers from 1 to n
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