如果3的a次方等于2那a等于几?要方法。。谢

2024-11-25 06:09:17
推荐回答(1个)
回答1:

3^a = 2
则对两面同时取log3

左面= log3(3^a) =log3(2)
a*log3(3) =log3(2)
a = log3(2)