60
Penjelasan dengan langkah-langkah:
U1 = 4 = 1 x 4
U2 = 8 = 2 x 4
U3 = 2 = 3 x 4
Un = n x 4 = 4n
U15 = 15 x 4
= 60
Un = n . 4 = 4n
U1 = 1 . 4 = 4
U2 = 2 . 4 = 8
U3 = 3 . 4 = 12
karena Un = n . 4 = 4n, maka..
U15 = 15 . 4 = 60
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60
Penjelasan dengan langkah-langkah:
U1 = 4 = 1 x 4
U2 = 8 = 2 x 4
U3 = 2 = 3 x 4
Un = n x 4 = 4n
U15 = 15 x 4
= 60
Un = n . 4 = 4n
U1 = 1 . 4 = 4
U2 = 2 . 4 = 8
U3 = 3 . 4 = 12
karena Un = n . 4 = 4n, maka..
U15 = 15 . 4 = 60