n00bish calculus question

[Agent Zero]

All right, I'm finding myself stuck on an equation for my course in analytical mechanics. It looks like:

d^2*u/dt^2 = k * u

I can't seem to remember how I get from here to an equation for u(t). Any help?

[almostbusto]

e ^ ((k^.5)t)

in ascii, its easier to write it:

f''(x)=K*f(x)

[Agent Zero]

I'll bear that in mind. Thanks for the assist!

[PairTheBoard]

I think that's the one differential equation I can actually solve.

PairTheBoard

[Borodog]

For the record, that is not the only solution.

[arahant]

[ QUOTE ]
For the record, that is not the only solution.

[/ QUOTE ]
damn physicists...

Boro...did you reccommend 'road to reality', or was that metric?