Final answer:
The element in position 4 of the vector Z = linspace(3,12,4) is 12, as it is the last number in the linearly spaced set of 4 points between 3 and 12.
Step-by-step explanation:
Given the vector Z = linspace(3,12,4), we need to determine the element in position 4. The linspace function generates a linearly spaced vector starting with the first argument and ending with the second argument, with the total number of elements specified by the third argument. In this case, it creates a vector with 4 linearly spaced points between 3 and 12. These points are 3, 6, 9, and 12. Therefore, the element in position 4 of vector Z is 12.