来自彭芳的问题
已知log5(3)=a,log5(4)=b,用a,b表示log5(24)
已知log5(3)=a,log5(4)=b,用a,b表示log5(24)
1回答
2020-09-2301:24
已知log5(3)=a,log5(4)=b,用a,b表示log5(24)
已知log5(3)=a,log5(4)=b,用a,b表示log5(24)
log5(4)=log5(2^2)=2log5(2)=b
log5(2)=b/2
log5(24)=log5(3*4*2)=log5(3)+log5(4)+log5(2)
=a+b+b/2
=a+3b/2