November 2018 1 13 Report

1. Ile ujemnych wyrazów ma ciąg an = (n a_n= n^2- 42_n + 425

2.Oblicz a_5 + 2b_2 jeżeli a_n= 16 \frac{n-4}{n-3} zaś b_n=log_3\sqrt{n^2-1}

3. Liczby x-3, 5, x+ 3 tworzą ciąg geometryczny. Oblicz x.


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