log3底1/2+log9底4-log9底3等于多少(过程写详细一点,

问题描述:

log3底1/2+log9底4-log9底3等于多少(过程写详细一点,

log3底1/2+log9底4-log9底3
=log3底1/2+log3底2-log3底√3
=log3底(1/2*2/√3)
=log3底[3^(-1/2)]
=-1/2