mathematica tag protected

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/22 12:54:53

mathematica tag protected
我懂啥米意思
看图我要怎么输入才可以解方程
In[11]:= Solve[{3 x + 2 y = 15,3 x - 3 y = 12},{x,y}]
During evaluation of In[11]:= Set::write:Tag Plus in 3 x+2 y is Protected.>>
During evaluation of In[11]:= Set::write:Tag Plus in 3 x-3 y is Protected.>>
During evaluation of In[11]:= Solve::naqs:15&&12 is not a quantified system of equations and inequalities.>>
Out[11]= Solve[{15,12},{x,y}]
为什么错了图无法上传

正确的语句是Solve[{3 x + 2 y == 15, 3 x - 3 y == 12}, {x, y}]
Mathematica里等于号是==
=是赋值号

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