Select every other element of a vector
So many choices
Return the first and last character of a string
Area of a Square
Matrix of almost all zeros, except for main diagonal
Given the variable x as your input, multiply it by four, then divide it by two. Then put the result in y.
Log of a number
Vector with a repeated entry
Square root of a number
Write a code that will follow the equation y = x * (x + x) * x.
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