Question

When evaluation of the derivative of the non-linear function is not possible, which method is used?

(a) Newton’s method

(b) Global method

(c) Jacobi method

(d) Secant method

I have been asked this question in class test.

Query is from Numerical Methods in chapter Numerical Methods of Computational Fluid Dynamics

Answer 1

The correct answer is (d) Secant method

The explanation is: An alternative to Newton’s method is the Secant method. This is much slower than Newton’s method. However, when the derivative of the function cannot be evaluated, this method is chosen as it does not involve any derivative.