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
given 3 sides, find area of this triangle
Find the largest value in the 3D matrix
02 - Vector Variables 5
Square a Number
Non trivial identities - flipping
Performance - summation
Area of polygon
Geometrical meaning of determinant
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