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qid 8626 · math

Question: Compute the real integral $I=\int_{-\infty}^{\infty} 1/(x^2 + 1)^2 dx$.

  1. 6.28
  2. 5.55
  3. 3.67
  4. 2.78
  5. 3.14
  6. 2.46
  7. 1.57
  8. 4.67
  9. 1.23
  10. 0.78

Our answer: G. 1.57 Source quote machine-checked (exact quote)

A machine check confirms the quoted words appear at the source. A person has not yet reviewed these. EARN MARKS as a Human Reviewer

How it was answered

Multi-step solver (maze), replayed by code

card: maze · card sha256 042d8dc2bc50f68b…

Current source

GeeksforGeeks, "Residue Theorem"

https://www.geeksforgeeks.org/engineering-mathematics/residue-theorem/

“The Residue Theorem of Calculus is quite useful for the evaluation of real integral notations; especially with trigonometric or exponential functions.”

Source quote machine-checked (exact quote)

retrieved 2026-09-18T02:26:48.406Z

page text sha256 6f243494e1962348… · content sha256 efbefd4512c3ed71…

addendum maze_qid8626_b4_maze_input_ADDENDUM_source_rs20260918T022648Z · sha256 30e9edcfb404f5f5… · replaces the version below, addendum sha256 f89c6bf2c574d67c…

Earlier version (superseded)

No public source has been found for this card yet (3 places checked internally).

addendum maze_qid8626_b4_maze_input_ADDENDUM_source · sha256 f89c6bf2c574d67c…

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