Final answer:
The limiting factor in differential equations is the boundary condition.
Step-by-step explanation:
The limiting factor in differential equations is the boundary condition.
Boundary conditions are additional conditions that are specified at the boundaries of a domain in which a differential equation is being solved. These conditions help determine the unique solution to the differential equation.
In contrast, initial conditions are specified at a single point within the domain and are used to determine the value of the unknown function at that point.