Level:
Project ID:
1003108708
Accepted:
1
Clonable:
0
Easy:
1
We are given an infinite geometric series:
\[ \sum\limits_{n=1}^{\infty} \left(-\frac12\right)^{n-1} \text{ .} \]
What is the value of its second term \( a_2 \)?
\( -\frac12 \)
\( 1 \)
\( \frac12 \)
\( \frac14 \)
\( -1 \)