You are right. In the reals, you can define ln(x2) for all of R except 0, while 2lnx is only defined for x>0. Where they are both defined, they agree. ... <看更多>
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You are right. In the reals, you can define ln(x2) for all of R except 0, while 2lnx is only defined for x>0. Where they are both defined, they agree. ... <看更多>