PTVP là phương trình mà hàm phải tìm nằm dưới dấu đạo hàm hoặc vi phân..Cấp của ptvp là cấp cao nhất của đạo hàm của ẩn hàm.Nếu ẩn hàm là hàm 1 biến PTVP thường. Nếu ẩn hàm là hàm nhiều biến PTVP đạo hàm riêng.Hệ PTVP là hệ gồm nhiều PTVP và nhiều ẩn hàm.
127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 127.0.0.1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 2012 ... 12 7 .0.0 .1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 20 12 12 7 .0.0 .1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 20 12 12 7 .0.0 .1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 20 12 12 7 .0.0 .1. .. 20 12 12 7 .0.0 .1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 20 12 12 7 .0.0 .1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 20 12 12 7 .0.0 .1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 20 12 . .. 12 7 .0.0 .1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 20 12 12 7 .0.0 .1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 20 12 12 7 .0.0 .1 downloaded 60384.pdf at Tue Jul 31 08:30:34 ICT 20 12 12 7 .0.0.1