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]
How to find the position of an element in a vector without using the find function
find the maximum element of the matrix
Calculate volume of box
Make roundn function
calculate the length of matrix
Calculate the average value of the elements in the array
the average value of the elements
to the 2 all elements
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