## var x := readreal('Введите x:'); if x > 4.5 then println('y = 2x =', 2*x) else if (0 <= x) and (x <= 4.5) then println('y = 1 - ln|1 - x^2| =', 1 - ln(1 - x ** 2)) else if x < 0 then println('y = exp(-x) =', exp(-x));