= ∫(0→2) (sinx)/x * [y]:(x/2→x) dx

= ∫(0→2) (sinx)/x * x/2 dx

= ( 1/2)∫(0→2) sinx dx

= (- 1/2)[cosx]:(0→2)

= (- 1/2)(cos(2) - 1)

= ( 1 - cos(2))/2

= sin? ( 1)