求值:lg2+log3 27+lg5+3^(1-log3 2)+A(2 3)+sin3π/2
lg2+lg5-log2(3)乘log3(2)
0.01^(-1/2)-log0.5底8+3^(log3底2)+(lg2)^2+lg2*lg5+lg5=?
计算:log3 8×log4 27+5^(1-log5 2)+(27/8)^-(2/3)+sin3π/2
若log3 2=a,log3 5=b,则log3 40=?若lg2=a,则lg5=?lg8=?lg25=?lg0.2=?
计算log2 6-log2 3,lg5+lg2,log5 3+log5 1/3,log3 5-log3 15
求值:(lg2)^3+3(lg2)^2*lg5+3lg2*(lg5)^2+(lg5)^3
计算log3[(9^2 * 27^(1/3))/3^(log3 234)]
计算 lg3*log3^4+(lg5)^2-(lg2)^2+(根3-根2)^-1-根号下5-2倍根号6e^2分之1ln2
求下列各式的值 1)log2 6+log2 3 2)lg5+lg2 3)log5 3+log5 三分之一 4)log3
log2(3)+log3(5)+log3(2)=?
1/(1+log3 2)+1/(1+log2 3)=lg3/(lg2+lg3)+lg2/(lg2+lg3)=1解释一下这
log2(3)=a,log3(7)=b.log12(56)=log3(7*8)=log3(7)+3log3(2)