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
Number of odd and even elements within matrix
03 - Matrix Variables 2
Help the Patriots get to the Super Bowl
Create an array (n,n) where only diagonal elements are '1' and others are '0'
Probabilities - More brains than luck
Probabilities - Balls and urns - 02
Geometrical meaning of determinant
Find the diagonal of the square of side L
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