× Log 8× +1 = × log 5

Bab Logaritma
Matematika SMA Kelas X

ˣlog 8x + 1 = ˣlog 5
ˣlog 8x + ˣlog x - ˣlog 5 = 0
ˣlog (8x . x : 5) = 0
8x²/5 = x⁰
8x²/5 = 1
8x² = 5
x² = 5/8
x = √(5/8)
x = (√5)/(√8)
x = (√5)/(2√2)
x = (√5)/(2√2) . (√2)/(√2)
x = (√10)/(2 . √2²)
x = (1/4) √10

itu disamakan langsung diturunkan dan ditemukan nilai x yaitu -3