+G(x,t) = 31²(x-7x)-36x² (1³ +9)-(x²-7x)² [(t−0.1)³ +9] u(x,t) = (x-7x)(+9). 2 网格剖分← 其中: Among 精确解为: The exact solution is 3.1.1 Creation of format 1 3.1.2 Creation of format 2 t 3.2 Solution of finite difference scheme 3.2.1 Solution of format 1 3.2.2 Solution of format 2 4 numerical experiment 4.1 numerical verification of format 1 4.2 numerical verification of format 2

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