Recent content by Exocet

Ah, obviously we use L-1[ n! / s^n+1 ] = t^n... so f(t) is -7t which mean F(s-a) = -7te^-2t. Thanks for the tip in the right direction :)

Aha! This definitely looks like it should work... but how do I go about inverting -7 / s^2 ?

Homework Statement This is a practice problem for a test on Laplace transforms Find L^-1[ (9s^3+17s^2+66s+45) / (s^2+9)(s+2)^2 ] (L^-1 = inverse laplace transform) Homework Equations From Laplace transform tables: L^-1[ 1 / s-α ] = e^αt L^-1[ s / s^2+ω^2 ] = cos(ωt)...

I have a way of counting to 99 on both hands, might be a bit tricky to write out but I'll give it my best shot! Count to 4 on your right hand using only your fingers, then hold out the thumb on its own for 5, and count up to 9 with the fingers til we have the whole hand out. Now we can add 1...

I'm in first year at university in England doing ME, and while I haven't met any CFD yet I know that there is a course in second year which runs across both semesters which teaches FORTRAN and MATLAB programming and basic CFD and FEA using FLUENT and ANSYS. This continues with another compulsory...