Penjelasan dengan langkah-langkah:
Diket :
U1 = a = 5
U5 = 17
a) Un = a + (n-1)b
U5 = 5 + (5-1)b
17 = 5 + 4b
17 - 5 = 4b
12 = 4b
b = 12/4
b = 3
b) Un = a + (n-1)b
= 5 + (n-1)3
= 5 + 3n - 3
= 3n + 2
semoga membantu
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Penjelasan dengan langkah-langkah:
Diket :
U1 = a = 5
U5 = 17
a) Un = a + (n-1)b
U5 = 5 + (5-1)b
17 = 5 + 4b
17 - 5 = 4b
12 = 4b
b = 12/4
b = 3
b) Un = a + (n-1)b
= 5 + (n-1)3
= 5 + 3n - 3
= 3n + 2
semoga membantu