Example 2: Iff(=2e-3i/u(t+1)-u(t-2)/, find F(s) Solution: f(t=2e -3tu(t+1)-2e-3tu(t-2) =2e-3u(t+1)-2e6e3x2)u(t2) 2 2 F(s)= 2e (1 s+3 s+3 s+3 Example 3: Find F(s) f() Solution f( =Au(-Au(t-dy .F(S) ds eExample 2: If f (t)=2e -3 t[ u(t+1)- u(t-2)], find F(s). Solution: f (t) =2e -3 tu(t+1)- 2e -3 tu(t-2) =2e –3 tu(t+1)- 2e -6e -3(t-2)u(t-2) (1 ) 3 2 3 1 2 3 2 ( ) 6 2s 6 2s e s e s e s F s − − − − − + = + − + = Example 3: Find F(s) t f (t) 0 A d f(t)=Au (t)-Au (t-d) Solution: ( ) (1 ) ds ds e s A e s A s A F s − −  = − = −