log4 (8)和log4(2)怎么算的答案是多少?

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log4 (8)和log4(2)怎么算的答案是多少?
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log4 (8)和log4(2)怎么算的答案是多少?
log4 (8)和log4(2)怎么算的答案是多少?

log4 (8)和log4(2)怎么算的答案是多少?
log4 (8)=log4 (4*2)=log4 (4)+log4 (2)=1+0.5=1.5
log4 (2)=0.5因为4的1/2次方是2

log4(8)=log(2^2)2^3=3/2log2(2)=(3/2)x1=3/2
log4(2)=log(2^2)2=1/2log2(2)=(1/2)x1=1/2