Use the linspace command or the colon operator : to create a vector t with entries

$2,2\mathrm{.}1,2\mathrm{.}2,...,10,$ and define the function y $=$

e

t$/15$ cos$(2$t$)$

$0\mathrm{.}6$t

$2+4$

$($make sure you use $$;$$ to suppress the

output for both t and y$)$