How to find the position of an element in a vector without using the find function
Getting the indices from a vector
Reverse a matrix
Calculate area of sector
Pointwise multiplication of vectors.
Create a square matrix with given conditions
Compare two strings.
Replace x value into y value in string text.
For given xx,x, y vectors build spline of x and y and find yy values for xx vector.
Multiply two polynomials p and q given in in vector representation.
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