/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: lastmirorinmiror https://public.slidesharecdn.com/v2/images/profile-picture.png ������������������ ������������ ��� O ��� music is my life��������� ������������ Im on my own!!! (sqrt(cos(x))*cos(200*x)+sqrt(abs(x))-0.7)*(4-x*x)^0.01, sqrt(9-x^2), -sqrt(9-x^2) from -4.5 to 4.5