Skip to main content

Theory and Modern Applications

Table 2 Absolute error of variance of \(\pmb{X(t)}\) with the Euler, RK2, and RK4 methods and \(\pmb{h=\frac{1}{20}}\) , \(\pmb{h=\frac{1}{50}}\)

From: Mean square numerical solution of stochastic differential equations by fourth order Runge-Kutta method and its application in the electric circuits with noise

t

Euler

RK2

RK4

\(\boldsymbol {h=\frac{1}{20}}\)

\(\boldsymbol {h=\frac{1}{50}}\)

\(\boldsymbol {h=\frac{1}{20}}\)

\(\boldsymbol {h=\frac{1}{50}}\)

\(\boldsymbol {h=\frac{1}{20}}\)

\(\boldsymbol {h=\frac{1}{50}}\)

0.1

1.425 × 10−3

7.356 × 10−4

3.914 × 10−5

1.149 × 10−5

7.045 × 10−6

3.206 × 10−6

0.2

3.356 × 10−3

1.108 × 10−3

7.243 × 10−5

4.312 × 10−5

1.467 × 10−5

6.542 × 10−6

0.3

8.147 × 10−3

2.006 × 10−3

9.568 × 10−5

6.452 × 10−5

2.354 × 10−5

8.312 × 10−6

0.4

2.267 × 10−2

3.876 × 10−3

9.809 × 10−5

7.765 × 10−5

3.456 × 10−5

1.318 × 10−5

0.5

4.476 × 10−2

6.189 × 10−3

5.539 × 10−5

8.826 × 10−5

4.901 × 10−5

2.894 × 10−5

0.6

6.523 × 10−2

1.078 × 10−2

8.438 × 10−5

9.105 × 10−5

6.886 × 10−5

4.364 × 10−5

0.7

8.045 × 10−2

4.368 × 10−2

4.308 × 10−4

1.432 × 10−4

9.724 × 10−5

6.157 × 10−5

0.8

1.158 × 10−1

6.456 × 10−2

1.214 × 10−3

2.565 × 10−4

1.393 × 10−4

8.364 × 10−5

0.9

3.369 × 10−1

8.564 × 10−2

2.927 × 10−3

8.253 × 10−4

2.038 × 10−4

1.421 × 10−4

1.0

4.158 × 10−1

1.831 × 10−1

6.624 × 10−3

2.567 × 10−3

3.059 × 10−4

1.897 × 10−4