Hello, Andriy Kavetsky. The tolerance in test 2 of the Test Suite is quite strange. As written, it seems that a result that is 1000 times larger than the true answer would be accepted as adequate. See Problem 44690 & Problem 44691 for some alternative cues. Also, it is recommended that at least four cases be provided in a Test Suite, though more are often necessary to prevent hard-coded workarounds. —DIV
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Sum of series I
Transpose of matrix
Rotate matrix by -90 degrees
Form a square matrix from four square sub-matrices
Get derivarive of polynomial given as vector array.
For given xx,x, y vectors build spline of x and y and find yy values for xx vector.
Find the sides of an isosceles triangle when given its area and height from its base to apex
For given vectors x,y find coresponding spline coefficients.
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