Question

Which series expansion is used by the Lax-Wendroff Technique?

(a) Taylor Series

(b) Fourier series

(c) McLaurin series

(d) Laurent series

The question was asked in a job interview.

The origin of the question is Finite Difference Methods topic in portion Finite Difference Methods of Computational Fluid Dynamics

Answer 1

The correct answer is (a) Taylor Series

For explanation: Lax-Wendroff technique uses the Taylor series expansion to approximate its time derivatives. This makes the technique marching in time in an explicit way. The number of terms used for this expansion decides the accuracy of this system.