Why change pi? there is pi built into matlab.
Select every other element of a vector
Basic arrays operations.
find the roots of a quadratic equation
Rounding off numbers to n decimals
Convert yards to feet
If you have matrix A, create matrix B using matrix A as an "element"
Write a code that will follow the equation y = x * (x + x) * x.
Vector with a repeated entry
Log of a number
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