approximation algorithm
class of algorithms that find approximate solutions to optimization problems
Dunkerley's method
method in mechanical engineering to determine the critical speed of a shaft-rotor system
Heron's method
Heron's method of calculating a square root
Machin-like formula
Formulas for pi
Wallis product
infinite product for pi
Newton's method
algorithm for finding a zero of a function
Beam propagation method
approximation technique for simulating the propagation of light in slowly varying optical waveguides