СРОЧНО У МЕНЯ ЭКЗАМЕН вычислить предел ЛИМ X–>1 (x2–5x+4)/(x2–8x+7)
lim x–>1 (x2–5x+4)/(x2–8x+7) = lim x–>1 ((x–4)(x–1)) / ((x–7)(x–1)) = lim x–>1 (x–4) / (x–7) = (1–4)/(1–7) = 3/6 = 1/2