log3^18=a+2 a=?
人气：231 ℃ 时间：2020-06-22 13:26:09
解答
log3^18?这个是log以3为底18的对数?
log3 18
=log3 (3^2*2)
=log3 3^2+log3 2
=2+log3 2(log以3为底2的对数)
a=log3 2
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