Q. Find the sum of the infinite geometric series.1+32+94+278+…Write your answer as an integer or a fraction in simplest form.______
Identify first term and common ratio: First, we need to identify the first term a and the common ratio r of the geometric series.The first term a is 1.The common ratio r is the factor by which each term is multiplied to get the next term. In this case, each term is multiplied by 32 to get the next term.So, r=32.
Use formula for infinite series sum: To find the sum of an infinite geometric series, we use the formula S=1−ra, where S is the sum of the series, a is the first term, and r is the common ratio. This formula only works if the absolute value of r is less than 1, which is true in this case since |\frac{2}{3}| < 1.
Plug in values for calculation: Now we can plug the values of a and r into the formula to find the sum of the series.S=1−321
Calculate denominator of fraction: We calculate the denominator of the fraction: 1−32=33−32=31
Find sum by dividing first term: Now we can find the sum S by dividing the first term by the result we just found: S=(1/3)1
Multiply to get final sum: To divide by a fraction, we multiply by its reciprocal. So we multiply 1 by the reciprocal of 31, which is 13 or just 3. S=1×3=3
More problems from Find the value of an infinite geometric series