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Which of the following code constructs vector of length 11?

a) > v <- 3*x + y + 1
b) > v <- 3*x + y + 2
c) > v <- 2*x + y + 1
d) > v <- 2*x + y + 4

Answer: c
Explanation: The elementary arithmetic operators are the usual +, -, *, / and ^ for raising to a power.

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