给出一种三角函数型辅助方程及其解,并借助符号计算系统Mathematica,把该方程直接应用到sine-Gordon方程、双sine-Gordon方程和MKdV-sine-Gordon方程,得到了Jacobi椭圆函数精确解以及退化后的孤波解和三角函数波解.
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