Question

log14(8) *log15(14)* log16(15)
log7 5*log5 4*log32(7)
log(2) *log11(10)*log128(11)
log9(1000)*log(3)
log81(128) *log2(3)
log5(8)*log16(125)
Решите пожалуйста!!!!!
Срочно !

Answer 1

1) log₈14 · log₁₄15 ·log₁₅16 = log₈16 = 4/3 log₂2 = 4/3;   2) log₇5 · log₅4 · log₃₂7 = 2/5 ·   log₇5 · log₅2 · log₂7 = 2/5 log₇7 = 2/5;   3) log₂10 log₁₀11 log₁₁128 = log₂128 = 7· log₂2 = 7;   4) log₁₀₀₀9 · log₃10 = 2/3 · log₁₀3 · log₃10 = 2/3;   5) log₁₂₈81 · log₃2 = 4/7  log₂3 · log₃2 = 4/7;   6) log₈5 · log₁₂₅16 = 4/9 · log₂5 · log₅2 = 4/9            

Answer 2

спасибо большое