Numerical Approximation of Higher-Order Solutions of the Quadratic Nonlinear Stochastic Oscillatory Equation Using WHEP Technique

Figure 7

The second-order response mean and variance for (a) 𝜀=0.1, (b) 𝜀=0.3, and (c) 𝜀=0.5.

(a)

(b)

(c)