The approximate solution near the classical turning points is yet to be found.

Whether an adequate approximate solution can be obtained is still an open question.

A preconditioner takes a right hand side and delivers an approximate solution.

Either way, we might end up having to accept an approximate solution.

However, an approximate solution to this problem does exist.

Since the information is partial and contaminated, only approximate solutions can be obtained.

"a genius at discovering approximate solutions to impossible financial problems"

However approximate solutions have been found for many shapes.

The only possibility is to use a computer to find an approximate solution.

This required more computer power than was available at the time, so he worked on useful algorithms for approximate solutions.