化简 log 9(9是下标)3+log 9(9是下标)27 log2(2是下标)(1/2)-log1/2(1/2是下标)2化简 log 9(9是下标)3+log 9(9是下标)27 log2(2是下标)(1/2)-log1/2(1/2是下标)2

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化简 log 9(9是下标)3+log 9(9是下标)27 log2(2是下标)(1/2)-log1/2(1/2是下标)2化简 log 9(9是下标)3+log 9(9是下标)27 log2(2是下标)(1/2)-log1/2(1/2是下标)2
化简 log 9(9是下标)3+log 9(9是下标)27 log2(2是下标)(1/2)-log1/2(1/2是下标)2
化简 log 9(9是下标)3+log 9(9是下标)
27 log2(2是下标)(1/2)-log1/2(1/2是下标)2

化简 log 9(9是下标)3+log 9(9是下标)27 log2(2是下标)(1/2)-log1/2(1/2是下标)2化简 log 9(9是下标)3+log 9(9是下标)27 log2(2是下标)(1/2)-log1/2(1/2是下标)2
答案是0吧、
首先、化简一些单个的给你:
log9(这括号代表下标、下同)3=log3()3/log3()9=1/2
log9()27=log9()3*3次方=3log9()3=3/2
log2()1/2=log2()1-log2()2=0-1=-1
log1/2()2=1/log2()1/2=-1
接下来就简单勒、
原式=1/2+3/2*(-1)-(-1)
=1/2-3/2+1
=0
纯手办勿抄袭、求最佳、