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Manipal MET2011MathematicsSequences and Series

The value of 2+2 ( 1 5 + 1 3 1 5^3 + 1 5 1 5^5 + . ) , is

Options

  1. A2+ 3
  2. B2+2
  3. C1 2 2
  4. D3

Correct answer

D. 3

Step-by-step solution

aligned 2+2 & ( 1 5 + 1 3 1 5^3 + 1 5 1 5^5 + ) & = 2+ ( 1+ 1 5 1- 1 5 ) & = 2+ ( 3 2 )= 3 aligned

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