Needs more Test Cases...
Please add more test cases !
Problem with the precision.
I've solved the problem with precision by simplifying the formula. However, the test suite should have some tolerance nonetheless.
Tolerance has been added to the test suite, along with additional cases.
I had to calculate by hand the case for x = 36 pi. Once I simplified the expression, I added a condition for this case. Otherwise, (I guess due to machine error) I wouldn't get it right even though I had the correct code.
If surface is 36*pi, then volume is (4/3)*pi*(sqrt(36*pi/4/pi))^3
This is math. If one answer is right, they should all be right.
Is this a roundoff question?
Change the sign of even index entries of the reversed vector
Do Fast Fourier Transformation
02 - Vector Variables 3
04 - Scalar Equations 2
Side of a rhombus
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