Mathematics · Complex Analysis
Let γ : [0, 1] → &complex; be the function defined by t ↦ e2πit and let I = ∫γ ez e1/z dz. Which of the following statements is true?
- 1I = 2πi ∑n=0∞ (1 / (n! (n + 1)!))✓
- 2I = 2πi ∑n=0∞ (1 / n!)
- 3I/(2πi) ∈ {4n : n ∈ ℤ, n ≥ 1}
- 4I = 0
Correct answer
I = 2πi ∑n=0∞ (1 / (n! (n + 1)!))
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