please fix the description
Filled with "5" not "4".
Getting the indices from a vector
Count decimal digits of a number
Product of elements in row
Evaluating a polynomial
Given the variable x as your input, multiply it by four, then divide it by two. Then put the result in y.
Square root of a number
Corresponding letter to ASCII code.
If you have matrix A, create matrix B using matrix A as an "element"
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