Integrating Square Roots

Differential equation of the (y')^2 = f(y) are difficult to integrate 
numerically because of the singularity at points where f(y) vanishes.  A 
simple trick removes the singularity.

CACM September, 1970

Moler, C. B.
Solomon, L. P.

quadrature, differential equations

5.16 5.17

CA700904 JB February 10, 1978  1:42 PM

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