Laplace transform. Please help me to solve question a,b,c,e and f. Thank you

Find Lif(t)} for the given f (t). la) f(t) = (1-7) b) f (t.) = 2cosh 21 + 7e' + 6 c) f (t) = -4+31- -5e" + 6sinh 7t d) f (t) = sin (at) - at cos(at) e ) f (t ) = (1+ 1 ) f) f (t) = cos 3t + sinh 3t Answer 7 la) F(s)= + b) F(s) = 2s + + 1.5. in 5- - 4 S - 1 c) F(s) = - 4 6 42 d) F (s) = - S S - 9 -49 ($ 3 + 0 ' ) e) F (s) =- 6 6 [) F(s) = 5 +95- - 9s + 27 + ( s* - 9 ) ( s * + 9 ) 0902-2027