Q. Find the sum of the infinite geometric series.1+53+259+12527+…Write your answer as an integer or a fraction in simplest form.__
Identify Terms and Ratio: To find the sum of an infinite geometric series, we need to identify the first term a and the common ratio r of the series. The formula for the sum of an infinite geometric series is S=1−ra, where |r| < 1.
Calculate Common Ratio: The first term a of the series is 1. The second term is 53, so to find the common ratio r, we divide the second term by the first term: r=153=53.
Check Ratio Value: Now we check if the common ratio r is less than 1 in absolute value. Since 53 is less than 1, we can use the sum formula for an infinite geometric series.
Apply Sum Formula: We apply the formula S=1−ra to find the sum of the series. Substituting the values we have: S=1−531.
Calculate Sum: We calculate the sum: S=1−531=521=1×25=25.
Final Answer: The sum of the infinite geometric series is 25. This is the final answer in its simplest form.
More problems from Find the value of an infinite geometric series