Solving a first order differential equation

How do you enter a condition in similar syntax to the one below in MATLAB. I am using dsolve with conditions and am having trouble entering a smilar condition into the software. Any advice would be greatly apreciated.

Answer 1

[Cris LaPierre]

See this example. I've copied/modified the relevant parts below.

syms y(t)
Dy = diff(y,t);
cond = Dy(2)==3;
ySol(t) = dsolve(eqn,cond)

[Rahal Rodrigo]

Works perfectly. Thanks alot!