Matematika rumus suku ke-n barisan bilangan 2/5, 3/7, 4/9, 5/11... adalah...a. un = n+1/n+3b. un = n+1/n+4c. un = n+1/2n+1d. un = n+1/2n+3​​

izaiahtoyulv – April 02, 2023

rumus suku ke-n barisan bilangan 2/5, 3/7, 4/9, 5/11... adalah...
a. un = n+1/n+3
b. un = n+1/n+4
c. un = n+1/2n+1
d. un = n+1/2n+3​​

Jawab:

D. Un = n+1/2n+3

Penjelasan dengan langkah-langkah:

U1 = 1+1/2.1+3 = 2/5

U2 = 2+1/2.2+3 = 3/7

U3 = 3+1/2.3+3 = 4/9

U4 = 4+1/2.4+3 = 5/11

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