The solution to this problem doesn't make any sense!!!
If you are using the word "duplicate" to mean multiply by 2, then the correct answer is [2,4,6], not [1,4,6]
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Calculate the derivative of a polynomial
Simple equation: Annual salary
the average value of the elements
Converts numbers into characters
calculate the length of matrix
Calculate the average value of the elements in the array
to the 2 all elements
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