SIAM Journal on Numerical Analysis, Vol. 14, No. 1 (Mar., 1977), pp. 40-70 (31 pages) We discuss algorithmic matters of a computer code for solving linear two-point boundary-value problems. The method ...

But what if you could use your smartphone to solve equations by pointing the camera at the problem in your textbook instead of using a graphing calculator? That is the idea behind PhotoMath.