Return x by differentiating it.
I'm confused by this problem. It requires the use of diff() and asks for differentiation, but it tests for equality with the input variable...
the author had proposed lots of questions with meaningless test. i despise this behavior
Is this triangle right-angled?
Find the index of n in magic(n)
Matlab Basics II - Count rows in a matrix
Find the area of a triangle
A shooting competition
Find the diagonal of the square of side L
Probabilities - Balls and urns - 02
Non trivial identities - reshape
Probabilities - Balls and urns - 01
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