Question

Помогите решить логарифм log3 27 -log1/7 7

Answer 1

Log[3,27]-log[1/7,7]=3-(-1)=4 
(т.к. 3^3=27, (1/7)^(-1)=7)

Answer 2

log₃27-log₁/₇7=log₃3³-(-log₇7)=3*log₃3+1=3*1+1=4.