GATE XE (Engineering Sciences) 2023 - Question 13

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Section: Engineering Mathematics | Marks: 1

If the quadrature formula ∫𝑓(𝑥)𝑑𝑥 1 −1 ≈1 9 (𝑐1𝑓(−1) + 𝑐2𝑓(1 2) + 𝑐3𝑓(1)) is exact for all polynomials of degree less than or equal to 2, then

  • A. 𝑐1 + 𝑐2 4 + 𝑐3 = 6
  • B. 𝑐1 + 𝑐2 3 + 𝑐3 = 4
  • C. 𝑐1 + 𝑐2 2 + 𝑐3 = 2
  • D. 𝑐1 + 𝑐2 + 𝑐3 = 5

Answer: A. 𝑐1 + 𝑐2 4 + 𝑐3 = 6

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