Question

Cho hàm số:

\(v:\left\{ {1;2;3;4;5} \right\} \to \mathbb{R}\)

\(n \to {\rm{ }}v\left( n \right) = 2n\)

Tính \(v\left( 1 \right),v\left( 2 \right),v\left( 3 \right),v\left( 4 \right),v\left( 5 \right)\).

Answer 1

\(v\left(1\right)=2.1=2\\ v\left(2\right)=2.2=4\\ v\left(3\right)=2.3=6\\ v\left(4\right)=2.4=8\\ v\left(5\right)=2.5=10.\)