如果lgm=b-lgn,则m等于()A.b/nB.(10^b)*nC.b-10^nD.(1/n)*(10^b)

Question

如果lgm=b-lgn,则m等于( )
A.b/n B.(10^b)*n C.b-10^n D.(1/n)*(10^b)

Answer 1

lgm=b-lgn=blg10-lgn=lg10^b-lgn=lg(10^b/n)
m=10^b/n
选D