Matematika

Pertanyaan

minta bantuannya guys... kalo isa kasih cara ya guys... makasih
minta bantuannya guys... kalo isa kasih cara ya guys... makasih

2 Jawaban

  • ²log 3 = x
    ³log 5 = y
    maka
    ²log 3 . ³log 5
    = ²log 5 = xy
    ===============================
    ¹⁵log 20
    = log 20 / log 15
    = ²log 20 / ²log 15
    = ²log(4.5) / ²log(3.5)
    = (²log4 + ²log5) / (²log3 + ²log5)
    = (2 + xy) / (x + xy)
    = (2 + xy) / x(1 + y)

  • LogAritMa

    ²log 3 = x
    ³log 5 = y

    15'log 20
    = ³log 20 / ³log 15
    = (³log (2² × 5)) / (³log (3 × 5))
    = (2 . ³log 2 + ³log 5) / (³log 3 + ³log 5)
    = (2 . 1/x + y) / ( 1 + y)
    = (2 + xy) / x(1 + y)
    = (2 + xy) / (x + xy) ✔