[tex]q = \frac{x}{2 } \\ | \frac{x}{2} | < 1 \: \: \: \times 2 \\ |x| < 2 \\ \\ - 2 < x < 2 \\ sn = \frac{2}{1 - \frac{x}{2} } = \frac{2}{ \frac{2 - x}{2} } = 2 \times \frac{2}{2 - x} = \frac{4}{2 - x} \\ \\ \frac{4}{2 - x} < - 4x + 8 \\ \frac{ 16x - 32}{2 - x} < 0 \\ (16x - 32)(2 - x) < 0 \\ z \: wykresu \: paraboli \: odczytujemy \: rozwiazanie \: [/tex]
X€R\{2}
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[tex]q = \frac{x}{2 } \\ | \frac{x}{2} | < 1 \: \: \: \times 2 \\ |x| < 2 \\ \\ - 2 < x < 2 \\ sn = \frac{2}{1 - \frac{x}{2} } = \frac{2}{ \frac{2 - x}{2} } = 2 \times \frac{2}{2 - x} = \frac{4}{2 - x} \\ \\ \frac{4}{2 - x} < - 4x + 8 \\ \frac{ 16x - 32}{2 - x} < 0 \\ (16x - 32)(2 - x) < 0 \\ z \: wykresu \: paraboli \: odczytujemy \: rozwiazanie \: [/tex]
X€R\{2}