Question

log u x=n e log a y =5 n entao log 4 x3 y e igual a

Answer 1

Log u x=n e log a y =5 n entao log 4 x3 y

Log x=n ==> x = u^n 
     u
log y = 5n ==> y = a^5n
    a

log 4 x3 y ==> log ( 4(u^n)^3 . a^5n ==> log 4u^3n .a^5n