Question

помогите:) { } ОСНОВА ЛОГАРИТМА     log{2}7 * log{7}0.25

Answer 1

  log{2}7 * log{7}0.25=  log{2}7 * log{7}1/4=  log{2}7 * log{7}2^-2=1/log{7}2*(-2)log{7}2=-2