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这个例子是这样的
sy[0] = 0 Clear[sy[0]
虽然我clear sy[0],当我输入:
clear
sy[0]
它仍然输出:
0
有人对此有想法吗?谢谢!
我懂了..
ClearAll[sy]为我工作。
ClearAll[sy]
或者sy[0] =.
sy[0] =.