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Question
关于sovle的问题 。
我已经知道在solve函数第一个参数的公式中，要是有常量；要求出x可用subs 如： a=1； subs(solve('a*x-3=0','x'))； 但当要求二元函数时， 如： a=1； subs(solve（'a*x-3+y=0','x-...
3 years ago | 1 answer | 0
