log2(3)=a,log3(7)=b.log12(56)=log3(7*8)=log3(7)+3log3(2)如题,为什么 log12(56)=log3(7*8)
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log2(3)=a,log3(7)=b.log12(56)=log3(7*8)=log3(7)+3log3(2)如题,为什么 log12(56)=log3(7*8)
log2(3)=a,log3(7)=b.log12(56)=log3(7*8)=log3(7)+3log3(2)
如题,为什么 log12(56)=log3(7*8)
log2(3)=a,log3(7)=b.log12(56)=log3(7*8)=log3(7)+3log3(2)如题,为什么 log12(56)=log3(7*8)
题目错了
无解
设log3 7=a,log2 3=b,则log2 7=?
log3(7)=a,log2(3)=b,则log2(7)=?
已知log3,7=a,log2,3=b,求log2,7的值.RT
已知log2 3=a,log3 7=b,试用a,b表示log14 56
已知 log2 3=a,log3 7=b,试用a,b表示log14 56
已知log2 3=a,log3 7=b,试用a,b表示log12 56
已知log2^3=a,log3^7=b,试用a`b表示log14^56
已知log2 3=a,log3 7=b,试用a,b表示log14 56
已知 log2 3=a log3 7=b,试用 a,b表示 log14 56
已知log2 3=a log3 7=b 用a,b表示log42 56
a=log2(3),b=log3(7),用a,b表示log42(56)
log2^3 =a log3^7 =b 求用a,b表达log14^56
已知log2(3)=a,log3(7)=b,试用a,b表示log36(45)
log2^3=a,log3^7=b求log3√7^(2√21)的值(请写过程)
若log2(3)=a,log3(7)=b,用ab表示log2√21(3√7)拜托…!
log2(3)+log3(5)+log3(2)=?
log2 3=a,log3 7=b,log42 56=?
已知log2 3=a,log3 7=b,试用ab表示log14 56?