Tolong buat esay bang aldy jrr
Soal 1
u2 = 10
u4 = 16
S10 = …?
a + b = 10
a + 3b = 16
________-
-2b = -6
b = 3
a + b = 10
a + 3 = 10
a = 10 – 3
a = 7
S10 = 10/2 (2(7) + (10-1) . 3)
S10 = 5 (14 + 9 . 3)
S10 = 5 (14 + 27)
S10 = 5 (41)
S10 = 205
Soal 2
3, 6, 12, 27
b = 6 – 3
= 3
U8 = 3 + (8-1).3
U8 = 3 + 7 . 3
U8 = 3 + 21
U8 = 24
Soal 3
∫ 3x² + 6x – 2 dx
= ∫ 3/3x³ + 6/2x² – 2/x +c
= x³ + 3x² – 2x + c