Penjelasan dengan langkah-langkah:
[tex]\bf{\sum \limits_{n=1}^{3} {3n^{2}+9}}[/tex]
= (3(1)² + 9) + (3(2)² + 9) + (3(3)² + 9)
= (3(1) + 9) + (3(4) + 9) + (3(9) + 9)
= (3 + 9) + (12 + 9) + (27 + 9)
= 12 + 21 + 36
= 69
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Penjelasan dengan langkah-langkah:
[tex]\bf{\sum \limits_{n=1}^{3} {3n^{2}+9}}[/tex]
= (3(1)² + 9) + (3(2)² + 9) + (3(3)² + 9)
= (3(1) + 9) + (3(4) + 9) + (3(9) + 9)
= (3 + 9) + (12 + 9) + (27 + 9)
= 12 + 21 + 36
= 69