Display positive elements of matrix.
Sum of diagonal of a square matrix
Return the first and last character of a string
Arrange vector in ascending order
Multiply two polynomials p and q given in in vector representation.
Calculate the sum of elements of n*n Hilbert matrix.
For given xx,x, y vectors build spline of x and y and find yy values for xx vector.
Find the sines of an isosceles triangle when given its area and height
Find the volume of cone
Find cosine between two given vectors u and v.
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