Question

1. Вычислить:
а) log3 1/27;
б) (1/3)^2log1/3 7;
в) log2 56 +2log2 12 - log2 63.

Answer 1

а) log3 1/27=log3( 3^(-3))=-3
б) (1/3)^2log1/3 7=(1/3)^log(1/3)49=49;
в) log2 56 +2log2 12 - log2 63=log2(56*144/63)=log2(8*4*4)=log2(2^3*2^2*2^2)=log2(2^7)=7