NOTasi Sigma
Notasi sigma untuk8 + 19/2 + 11 + 25/2 + . . . + 80a= 8b = 19/2 - 8b = 3/2
Un = a + (n- 1)bUn = 8 + (n - 1) 3/2Un = 8 + 3/2 n - 3/2un = 3/2 n + 13/2un = 1/2 { 3n + 13 }
Un = a + (n - 1) b80 = 8 +(n- 1 ) (3/2)72= 3/2 (n - 1)n- 1 = 48n = 49
notasi sigma
[tex]\sf \sum\limits_{n = 1}^{49}\ \frac{1}{2}(3n+ 13)[/tex]
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NOTasi Sigma
Notasi sigma untuk
8 + 19/2 + 11 + 25/2 + . . . + 80
a= 8
b = 19/2 - 8
b = 3/2
Un = a + (n- 1)b
Un = 8 + (n - 1) 3/2
Un = 8 + 3/2 n - 3/2
un = 3/2 n + 13/2
un = 1/2 { 3n + 13 }
Un = a + (n - 1) b
80 = 8 +(n- 1 ) (3/2)
72= 3/2 (n - 1)
n- 1 = 48
n = 49
notasi sigma
[tex]\sf \sum\limits_{n = 1}^{49}\ \frac{1}{2}(3n+ 13)[/tex]