33 Ways to Sell Your Screenplay!: How to Get Your Screenwriting on the Market and Start a Career a

33 Ways to Sell Your Screenplay!: How to Get Your Screenwriting on the Market and Start a Career a

Matematika Tentukan barisan bilangan yang suku ke-n berikut​

Tentukan barisan bilangan yang suku ke-n berikut​

Jawaban:

a. Un= n(n+3)/2 =

U1= 1(1+3)/2 = 1(4)/2 = 4/2 = 2

U2= 2(2+3)/2= 2(5)/2 = 10/2= 5

U3= 3(3+3)/2= 3(6)/2 = 18/2 = 9

barisan = 2,5,9,14,20

aturanya: urut satu angka dari U1 Sampai U tak hingga.

b. Un= (n+1)(n+2)

U1= (1+1)(1+2)

U1= 2(3)

U1= 6

U2= (2+1)(2+2)

U2= 3(4)

U2= 12

U3= (3+1)(3+2)

U3= 4(4)

U3= 16

U4= (4+1)(4+2)

U4= 4(6)

U4= 24

barisan = 6,12,16,24

c. Un= 3.2^n-1

U1= 3.2^1-1

U1= 3.2^0 = 3

U2= 3.2^2-1

U2= 3.2 = 6

U3= 3.2^3-1

U3= 3.2^2 = 3.4 = 12

barisan: 3,6,12. .........,24,48........

aturanya: ratio 2 dengan dikali 2 setiap barisan

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