已知log2 3=a,log5 2=b,用a,b表示log30 12

2log5 10+log5 0.25= 2log5 25-3log2 64= log2(log2 16)= 已知lg2=a,lg3=b,求log3 4,log2 12 已知log2 3=a,log5 2=b,用a,b表示log30 12 1、计算log5^35+2log1/2^根号2-log5^1/50-log5^14 2、已知log3^7=a,log2^3=b,求log21^28 已知log5 2=a,log5 3=b,求log5 log2/27及 log 3=a log5=b 已知log2=a,log3=b,用a、b表示log5 72 (急~）1.已知log2=a,log3=b,用a、b表示log5 722.已知x=log2 5,求2^x+4^-x 已知log5 (3)=a,log5(4）=b ,用a,b表示log5(24) 已知Log5(3)=a,log5(4)=b,则log5(270)可表示为 (log5)^2+(log2)(log50)=? 对数函数运算要详解谢谢2log5 25 + 3log2 64log2(log2 16)已知X的对数求Xlgx=3lgn-lgm已知lg2=a lg3=b求lg6的值 log3 4 log5怎么表示（已知log2=a,log3=b） log2(a)=log3(b)=log5(c) 已知log5(根号6+1)+log2(根号2-1)=a,则log5(根号6-1)+log2(根号2+1)= 已知log5(√6+1）+log2(√2-1）=a,则log5(√6-1）+log2(√2+1）= 若(log2(3))^x-(log5(3))^x>=(log2(3))^(-y)-(log5(3))^(-y) 则 A.x+y>0 B.x+y=0 D. 已知log5 3=a log5 4=b求证 log25 12=1/2(a=b) 已知log5 3=a,log5 4=b,求证:log2512=1/2(a+b)求详解 已知a=log3(4),4^b=3,则log5(a)+log5(b)=?