zad do rozwiązania z załącznika  4.72 , 4.73 , 4.76 najlepiej żeby był skan

zadanie 4.72 a) [latex]f(x) = frac{1}{x} {{ ightarrow} atop {_{[0, - 2]}}} g(x) = frac{1}{x - 0} + (-2) = frac{1}{x} - 2[/latex] dziedzina: [latex]x eq 0[/latex]   b) [latex]g(x) = 0 = frac{1}{x} - 2\ frac{1}{x} = 2\ x = frac{1}{2}[/latex]   c) [latex]g(x) = frac{1}{x} - 2 < 0 |*x^2\ x - 2x^2 < 0\ xleft(x - frac{1}{2} ight) > 0\ x in (-infty, 0)cupleft(frac{1}{2}, +infty ight)[/latex]   zadanie 4.73 a) [latex]f(x) = frac{-5}{x} {{ ightarrow} atop {_{[0, 4]}}} g(x) = frac{-5}{x - 0} + 4 = - frac{5}{x} + 4[/latex] dziedzina: [latex]x eq 0[/latex]   b) [latex]g(x) = 0 =- frac{5}{x} + 4\ frac{5}{x} = 4\ x = frac{5}{4}[/latex]   c) [latex]g(x) =- frac{5}{x} + 4 > 0 |*x^2\ -5x + 2x^2 > 0\ xleft(x - frac{5}{4} ight) > 0\ x in (-infty, 0)cupleft(frac{5}{4}, +infty ight)[/latex]   zadanie 4.76 mamy wzór: [latex]f(x) = frac{a}{x} {{ ightarrow} atop {_{[b, c]}}} g(x) = frac{a}{x - b} + c[/latex]   a) [2, 0] b) [- 2, 0] c) [10, - 1] d) [0, - 1] e) [0, 8] f) [- 5, 6]