Matematika -1 User TankCari lah suku ke 200 berikut !a. 3, 8, 13, 18, ...b. 7, 9, 11, 13, ...c. 6, 12, 18, ...gunakan rumus Un = a + (n - 1) b​

savannahdooleyulv – April 03, 2023

-1 User Tank

Cari lah suku ke 200 berikut !
a. 3, 8, 13, 18, ...
b. 7, 9, 11, 13, ...
c. 6, 12, 18, ...

gunakan rumus Un = a + (n - 1) b​

Penjelasan dengan langkah-langkah:

a. 3,8,13,18

b = U2 - U1 = 8 - 3 = 5

un = a + (n-1)b

u200 = 3 + (200-1)(5)

u200 = 3 + 199(5)

u200 = 3 + 995

u200 = 998

b. 7,9,11,13

b = U2 - U1 = 9 - 7 = 2

Un = a + (n - 1) b

u200 = 7 + (200-1)(2)

u200 = 7 + 199(2)

u200 = 7 + 398

u200 = 405

c. 6,12,18

b = U2 - U1 = 12 - 6 = 6

Un = a + (n - 1) b

u200 = 6 + (200-1)(6)

u200 = 6 + 199(6)

u200 = 6 + 1194

u200 = 1200

Jawab:

Penjelasan dengan langkah-langkah:

a. Un = 3+5(n-1) = 5n-2

U200 = 5×200 - 2 = 998

b. Un = 7+2(n-1) = 2n+5

U200 = 2×200 + 5 = 405

c. Un = 6n

U200 = 6×200 = 1200

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