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For the following sequence determine the common difference (if it is an arithmetic sequence) or the common ratio (if it is a geometric sequence).

1,quadsqrt3,quad3,quad dots

(sqrt3)/(3)

(2sqrt3)/(3)

sqrt3

2sqrt3

For the following sequence determine the common difference (if it is an arithmetic sequence) or the common ratio (if it is a geometric sequence).\newline1,3,3, 1, \quad \sqrt{3}, \quad 3, \quad \ldots \newline33 \frac{\sqrt{3}}{3} \newline233 \frac{2 \sqrt{3}}{3} \newline3 \sqrt{3} \newline23 2 \sqrt{3}

Full solution

Q. For the following sequence determine the common difference (if it is an arithmetic sequence) or the common ratio (if it is a geometric sequence).\newline1,3,3, 1, \quad \sqrt{3}, \quad 3, \quad \ldots \newline33 \frac{\sqrt{3}}{3} \newline233 \frac{2 \sqrt{3}}{3} \newline3 \sqrt{3} \newline23 2 \sqrt{3}
  1. Sequence Type Determination: To determine if the sequence is arithmetic or geometric, we need to examine the pattern of the terms. An arithmetic sequence has a constant difference between terms, while a geometric sequence has a constant ratio between terms.
  2. Arithmetic Sequence Check: Let's check for an arithmetic sequence by subtracting the second term from the first term and the third term from the second term:\newlineSecond term - First term = 31\sqrt{3} - 1\newlineThird term - Second term = 333 - \sqrt{3}
  3. Arithmetic Sequence Calculation: Now, let's calculate the differences:\newline310.732\sqrt{3} - 1 \approx 0.732\newline331.2683 - \sqrt{3} \approx 1.268\newlineThese differences are not equal, so the sequence is not arithmetic.
  4. Geometric Sequence Check: Next, let's check for a geometric sequence by dividing the second term by the first term and the third term by the second term:\newlineSecond term / First term = 31\frac{\sqrt{3}}{1} = 3\sqrt{3}\newlineThird term / Second term = 33\frac{3}{\sqrt{3}}
  5. Geometric Sequence Calculation: Now, let's calculate the ratios:\newline31.732\sqrt{3} \approx 1.732\newline33=3(3)(33)=(33)3=3\frac{3}{\sqrt{3}} = \frac{3}{(\sqrt{3})} * (\frac{\sqrt{3}}{\sqrt{3}}) = \frac{(3\sqrt{3})}{3} = \sqrt{3}\newlineThe ratios are equal, so the sequence is geometric.
  6. Common Ratio Determination: Since the sequence is geometric, the common ratio is the value we found by dividing any term by the previous term, which is 3\sqrt{3}.

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