Given the radius x, y would be the area of a circle.
Pi = 3.1416
Why change pi? there is pi built into matlab.
Back to basics 21 - Matrix replicating
Create a vector whose elements depend on the previous element
Back to basics - mean of corner elements of a matrix
Reverse a matrix
Volume of a box
Square root of a number
Write a code that will follow the equation y = x * (x + x) * x.
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