the sum of the infinite series is -12
Sum of infinite series
The formula for calculating the sum to infinite series of the sequence is expressed as:
S∞ = a/1-r
- a is the first term = -18
- r is the common ratio = -0.5
Substitute
S∞ = -18/1-(-0.5)
S∞ =-18/1.5
S∞ = -12
Hence the sum of the infinite series is -12
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