Another question! Continuing from my last question about the summation notation, would my first term that i’m finding start at two? I need to find the first four, so the first one (using 1) is 1. The second on (using 2) is -2. The third one (using 3) is -4. The fourth (using 4) is -6

Answer 1

the summation notation has an infinity symbol at the top and “n=2” on the bottom. Then, (-2)^(n-1) right next to it.

Answer 2

yes, the first terms uses n=2