Jika p = ( -3 a 2 ) dan besaran vektor p = 7 satuan, maka tentukan nilai a
|p| = 7
√((-3)² + a² + (2)²) = 7
√(9 + a² + 4) = 7
a² + 13 = 49
a² - 36 = 0
a² - 6² = 0
(a + 6) (a - 6) = 0
a = - 6 atau a = 6
[answer.2.content]1000 places to see before you die (Chinese Edition)
1000 places to see before you die (Chinese Edition)
|p| = 7
√((-3)² + a² + (2)²) = 7
√(9 + a² + 4) = 7
a² + 13 = 49
a² - 36 = 0
a² - 6² = 0
(a + 6) (a - 6) = 0
a = - 6 atau a = 6
[answer.2.content]