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Omni-MATH / For R>1 let D_(R)=(a,b)∈Z²:0<a²+b²<R. Compute lim_(R→∞)∑_((a,b)∈D_(R))((−1)^(a+b))/(a²+b²) · Discussion

Discussing For R>1 let D_(R)={(a,b)∈Z²:0<a²+b²<R}. Compute lim_(R→∞)∑_((a,b)∈D_(R))((−1)^(a+b))/(a²+b²) · Omni-MATH

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