hello if someone could please tell me if i am incorrect and where , and how to type it into a math program so it can understand it many thanks stephan2124
L -3e^{9t}+9 sin(9t)
L-3e^{9t}+L 9 sin (9t)
-3 Le^{9t}+9 L sin(9t)
-3 (1/s-9) +9 (9/(s^2+9^2))
-3 (1/s-9) +9 (9/(s^2+81))
into a math...