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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).

4x-1,quad3x-1,quad2x-1,quad".. "
1

-x

x

-1

For the following sequence determine the common difference (if it is an arithmetic sequence) or the common ratio (if it is a geometric sequence).\newline4x1,3x1,2x1,..  4 x-1, \quad 3 x-1, \quad 2 x-1, \quad \text {.. } \newline11\newlinex -x \newlinex x \newline1 -1

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).\newline4x1,3x1,2x1,..  4 x-1, \quad 3 x-1, \quad 2 x-1, \quad \text {.. } \newline11\newlinex -x \newlinex x \newline1 -1
  1. Check for Common Difference: To determine if the sequence is arithmetic or geometric, we need to check the differences or ratios between consecutive terms.\newlineFirst, we check if there is a common difference by subtracting the second term from the first term and the third term from the second term.
  2. Calculate Difference: 11st & 22nd Terms: Calculate the difference between the first and second terms: (3x1)(4x1)=3x14x+1=x(3x - 1) - (4x - 1) = 3x - 1 - 4x + 1 = -x.
  3. Calculate Difference: 22nd & 33rd Terms: Calculate the difference between the second and third terms: (2x1)(3x1)=2x13x+1=x(2x - 1) - (3x - 1) = 2x - 1 - 3x + 1 = -x.
  4. Sequence is Arithmetic: Since the differences between consecutive terms are the same x -x , the sequence is an arithmetic sequence with a common difference of x -x .

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