lgx=lg(a/b)

x= a/b

(2)lg (radix 3)x=-2/3

lgx /(lg3^ 1/2)=-2/3

lgx=-2/3lg3^ 1/2

lgx=lg3^( 1/2*-2/3)

x=3^(- 1/3)

(3)lnx = 3 lnn+lnm lnx=ln(n^3*m)x=n^3*m

4) 10 (exponent x)=0. 1 10 (exponent x) =10 (-1) x =-1.

2log (radix 5)25+3log (radix 2)64-8log (radix 7) 1.

=2log (radix 5) 5 2+3 log (radix 2) 2 6-8 log (radix 7) 7 0

=2*2+3*6-8*0

=22