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

Figure 5

The first-order response mean and variance for (a) 𝜀=0.1, (b) 𝜀=0.3, and (c) 𝜀=0.5. Case of exponential function 𝑒^−0.5𝑡 multiplied by the white noise.

(a)

(b)

(c)