Write the sum using summation notation
-$0+2+6+12+20$

A) $\sum_{i=1}^{5}\left(i^{2}+\mathrm{i}\right)$

B) $\sum_{i=1}^{5}\left(i^{2}+i-2\right)$

C) $\sum_{i=1}^{5}\left(i^{2}-i\right)$

D) $\sum_{i=1}^{5}(2 i-2)$

Question

Write the sum using summation notation
-$0+2+6+12+20$

A) $\sum_{i=1}^{5}\left(i^{2}+\mathrm{i}\right)$

B) $\sum_{i=1}^{5}\left(i^{2}+i-2\right)$

C) $\sum_{i=1}^{5}\left(i^{2}-i\right)$

D) $\sum_{i=1}^{5}(2 i-2)$

Quizplus · Accepted Answer

The sequence 0, 2, 6, 12, 20 can be represented by the formula $i^2 - i$ for $i = 1$ to $5$.

Write the Sum Using Summation Notation - 0+2+6+12+200+2+6+12+200+2+6+12+20 A) ∑i=15(i2+i)\sum_{i=1}^{5}\left(i^{2}+\mathrm{i}\right)∑i=15​(i2+i) B) ∑i=15(i2+i−2)\sum_{i=1}^{5}\left(i^{2}+i-2\right)∑i=15​(i2+i−2) C) ∑i=15(i2−i)\sum_{i=1}^{5}\left(i^{2}-i\right)∑i=15​(i2−i)