var
x, y: real;
begin
x := -1;
while x <= 3 do
y := x * x + 4 * x - 7;
if x >= 2 then
y := 1 / y;
writeln(x:5:2, y:21:15);
x := x + 0.25;
end;
end.
repeat
until x > 3;
var
x, y: real;
begin
x := -1;
while x <= 3 do
begin
y := x * x + 4 * x - 7;
if x >= 2 then
y := 1 / y;
writeln(x:5:2, y:21:15);
x := x + 0.25;
end;
end.
var
x, y: real;
begin
x := -1;
repeat
y := x * x + 4 * x - 7;
if x >= 2 then
y := 1 / y;
writeln(x:5:2, y:21:15);
x := x + 0.25;
until x > 3;
end.