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Theory and Modern Applications

Table 9 Problem 4 : MAEs using ( 2.7a )-( 2.7b ) with \(\pmb{C=\lambda}\)

From: A class of quasi-variable mesh methods based on off-step discretization for the solution of non-linear fourth order ordinary differential equations with Dirichlet and Neumann boundary conditions

λ

10

\(\boldsymbol {10^{2}}\)

\(\boldsymbol {10^{3}} \)

\(\boldsymbol {10^{4}} \)

\(\boldsymbol {10^{5}} \)

N

u

\(\boldsymbol {u'}\)

u

\(\boldsymbol {u'}\)

u

\(\boldsymbol {u'}\)

u

\(\boldsymbol {u'}\)

u

\(\boldsymbol {u'}\)

32

3.10e−04

2.13e−03

1.54e−04

8.59e−03

3.56e−05

1.91e−02

3.44e−05

3.37e−02

1.43e−02

6.35e−02

64

7.77e−05

5.34e−04

3.87e−05

2.16e−03

8.95e−06

4.83e−03

1.59e−06

8.60e−03

2.47e−07

1.33e−02

128

1.94e−05

1.33e−04

9.68e−06

5.41e−04

2.24e−06

1.22e−03

3.99e−07

2.16e−03

6.24e−08

3.37e−03

256

4.86e−06

3.33e−05

2.42e−06

1.35e−04

5.60e−07

3.05e−04

9.98e−08

5.41e−04

1.56e−08

8.46e−04

Order

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

2.00

1.99