Question

lim t→1 e^−t(cos(πt)+e^t)/3. ?

Answer 1

\[\lim_{t \rightarrow 1}\frac{ e⁻^t (\cos(\Pi t))+e^t}{ 3 }\]

Answer 2

the answer is \[\frac{ 1 }{ 3 }-\frac{ e⁻¹ }{ 3 }\] but I don't understand how

Answer 3

it`s a direct question all you need to do is to put value of t =1 and get the answer

Answer 4

but if I put value t=1 I get decimal numbers?

Answer 5

Like, maybe my problem is that I don't understand what cos(pi) is?

Answer 6

cos(pi) = cos(180 degree) = -1