Question

Jawab dengan caranya

Answer 1

6'log 5 = a
5'log 4 = b
⁴log 0,24 = ⁴log (24/100) = ⁴log 24 - ⁴log 100
= ⁴log4 + ⁴log6 - ⁴log4 - ⁴log 5²
= 1 + (⁴ log 5 x 5'log 6) - (2 x ⁴log 5)
= 1 + ( 1/b x 1/a ) - 2/b
= 1 + 1/ab - 2/b
= ab/ab + 1/ab - 2a/ab
= ( ab + 1 - 2a)/ab