Problem $3$

For the signal x$($t$)$ given below

x$($t$)=[$u$($t$+1)-$u$($t$-1)]$cos$(50\backslash$pi t$)$

$($a$)$ Give the Fourier Transform x$(\backslash$omega $)$

$($b$)$ Graph and carefully label the magnitude spectrum $|$x$(\backslash$omega $)|.$ Use graph paper.