∞
∑ (-2)^n-1
n=2
= -2 + 4 - 8 + 16 - ...
= (-2+4) + (-8+16) + (-32+64) ....
= 2 + 8 + 32 + ...
so what do you think ?
Consider the infinite geometric series below.
a. Write the first 4 terms of the series
b. Does the series diverge or converge?
c. If the series has a sum, find the sum.
∞
∑ (-2)^n-1
n=2
1 answer