December 2018 1 17 Report
1.Oblicz granice ciągu
a)  \frac{2}{1*3} + \frac{2}{3*5} +...+ \frac{2}{(2n-1)(2n+1)}

b) \frac{1-2+3-4+...+(2n-1)-(2n)}{1-3n}

2.Wykaż że ciąg jest zbieżny
a) \frac{1}{n+1} + \frac{1}{n+2} +...+ \frac{1}{n+n}


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