Quizizzz
penyelesaian notasi sigma dibwh↓
[tex]\displaystyle\sum_{a=2}^{7} \: (2a + 1)[/tex]
- yg gak tau jgn dipaksa
- liat aplikasi direport
» Notasi Sigma
[tex]~[/tex]
[tex]\displaystyle\sum_{a=2}^{7} \: (2a + 1)[/tex]
~~
Jadikan batas bawahnya 1 :
[tex]\displaystyle = \sum_{a=2 - 1}^{7 - 1} \: (2(a + 1) + 1)[/tex]
[tex]\displaystyle = \sum_{a= 1}^{6} \: (2a + 2+ 1)[/tex]
[tex]\displaystyle = \sum_{a= 1}^{6} \: (2a + 3)[/tex]
[tex]\displaystyle = (2(1) + 3) + (2(2) + 3) + (2(3) + 3) + (2(4) + 3) + (2(5) + 3) + (2(6) + 3)[/tex]
[tex]\displaystyle = 5+ 7 + 9+ 11 + 13+ 15[/tex]
[tex]\displaystyle = 12+ 20 + 28[/tex]
[tex]\displaystyle =32 + 28[/tex]
[tex] \boxed{\displaystyle =60}[/tex]
[tex]\rm{ \displaystyle\sum_{a=2}^{7} \: (2a + 1)}[/tex]
[tex]» \: \rm{ (2(2) + 1) + (2(3) + 1) + (2(4) + 1) + (2(5) + 1) + (2(6) + 1) + (2(7) + 1)}[/tex]
[tex]» \: \rm{5 + 7 + 9 + 11 + 13 + 15 }[/tex]
[tex]» \: \rm{12 + 9 + 11 + 13 + 15 }[/tex]
[tex]» \: \rm{21 + 11 + 13 + 15 }[/tex]
[tex]» \: \rm{32 + 13 + 15 }[/tex]
[tex]» \: \rm{45 + 15 }[/tex]
[tex]» \: \rm{60 }[/tex]
[answer.2.content]
