Diketahui x + = a . Tentukan nilai x³ + = ….. (dalam a)
Jawaban Terkonfirmasi
X + 1/x = a
x³ + 1/x³ = ( x + 1/x)³ – 3(x)(1/x)(x + 1/x)
x³ +1/x³ = (a)³- 3(1)(a)
x³ + 1/x³ = a³ – 3a
Diketahui x + = a . Tentukan nilai x³ + = ….. (dalam a)
X + 1/x = a
x³ + 1/x³ = ( x + 1/x)³ – 3(x)(1/x)(x + 1/x)
x³ +1/x³ = (a)³- 3(1)(a)
x³ + 1/x³ = a³ – 3a