实现两个指数信号的卷积，通过绘制出两个输入的指数信号的图形进行卷积后的图形说明卷积的作用。-Convolution of two exponential signals to achieve, by drawing out the index of the two input signals after convolution graphics graphic illustration of the role of convolution.

利用wolf法求取Lyapunnov指数，并绘制图形-Method used to obtain Lyapunnov wolf index, and draw graphics