piecewise-function code snippets in matlab

a) plot the graph of 2𝑥 (𝑢(𝑥)−𝑢(𝑥 − 5))+10(𝑢(𝑥 − 5)−𝑢(𝑥 − 10)) for 0 ≤ x ≤ 12. describe the graph produced. in matlab