if(length(x)==length(y))怎么错了?
if(length(x)==length(y))怎么错了?
错误：
Input argument "x" is undefined.
Error in ==> Language at 3
if length(x)==length(y)
错误：
Input argument "x" is undefined.
Error in ==> Language at 3
if length(x)==length(y)
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你能帮帮他们吗