Question

Jika t = x² - 3 / 3x + 7, maka log (1 - | t |)

Answer 1

Log (1 - | t | )= ( 1 - |x²-3/3x+7)

|x²-3/3x+7|=0
|x²-3x-10| = 0
| (x-5) (x+2) | = 0
x=5 v x= -2

maka log (1 - | t | )
= (1 - | 5²- 15 - 10 | )
= (1 - | 25-15-10|)
= (1 - | 0 | )
= 1
atau
= (1 - | -2²+ 6 - 10 | )
= (1 - | 4+6-10
=1