[SPLIT] which is the Fourier Transform for h(t)=u(t)-u(t-?)?

[antreas_k]

hello.
i would like some help for this:

which is the Fourier Transform for h( t )= u( t ) - u( t - ? ) ?
i know the left side is going to be H( ? ) and u( t ) becomes ? ?( ? ) +1
but i don't know the rest


thank you in advance