sorry messed up the first one, please help?

1 ⤊

a sequence is defined recursively. Find the first five terms

A_n= 2A(n-1)+A(n-2)
when: A_1= -2; A_2= 4

2007-12-05 03:12:25 · 2 answers · asked by JahAtmosphere 1 in Science & Mathematics ➔ Mathematics

a[n] = 2a[n-1] + a[n-2], a[1] = -2, a[2] = 4
a[3] = 2(4) + -2 = 6
a[4] = 2(6) + 4 = 16
a[5] = 2(16) + 6 = 38

2007-12-05 03:27:18 · answer #1 · answered by Philo 7 · 1⤊ 1⤋

A_1 = -2, A_2 = 4
A_3 = 2*4 + -2 = 6
A_4 = 2*6 + 4 = 16
A_5 = 2*16 +6 = 38

2007-12-05 03:27:05 · answer #2 · answered by halac 4 · 0⤊ 2⤋