Nilai dari ⁹log 25 . ⁵log 2 – ³log 54 = …

by

Pembahasan:

⁹log 25 . ⁵log 2 – ³log 54
= ³²log 5² . ⁵log 2 – ³log 54
= ³log 5 . ⁵log 2 – ³log 54
= ³log 2 – ³log 54
= ³log  2 
           54
= ³log 3⁻³
= –3
  Jika vektor a = (1 2 3), vektor b = (5 4 -1), dan vektor c = (4 -1 1),