Dik : u1=10 u2=5a+4 u3=7a+4 Dit : u12.....?
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Dik : u1=10 u2=5a+4 u3=7a+4
Dit : u12.....?
Dit : u12.....?
1 Jawaban
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1. Jawaban mryzkiki17
U1
3a + 4 = 10
3a = 10-4
3a = 6
a = 6:3
a = 2
U2
= 5a + 4
= 5(2) + 4
= 10 + 4
= 14
Beda
= U2 - U1
= 14 - 10
= 4
U12
= a + (n-1)b
= 10 + (12-1)2
= 10 + (11)2
= 10 + 22
= 32