如果2^a=3^a+1, 证明a=log3/log(2/3)
已知log3(2)=a,3^b=5,则用a,b表示log(3)根30为
log2(3)=a,log3(7)=b.log12(56)=log3(7*8)=log3(7)+3log3(2)
证明对数运算法则(1)log(a)(MN)=log(a)(M)+log(a)(N); (2)log(a)(M/N)=
log3(2)=a,3^b=5,用a,b表示log3(根号30)
如果a>2,证明:log(a-1)a>loga(a+1)
(1)利用关系式log(a)N=ba^b=N证明换底公式 log(a)N=log(m)N/log(m)a (2)利用(1
1)如果13ab = 4a^2+9b^2,请证明log ((a+b)/3)= (loga+logb)/2.2) 计算X:
设a=log3π,b=log3根号3,c=log3根号2比较abc
对数函数题 log a - log b = 3 log (c/2) 求 a = ______________
log a(2/3)
a=log3²,那么log3八次方-2log3六次方用a表示是?
log(2)3=a,则log(6)4=(