TM NGHI^E.M T^O'NG QUAT CU'A PHU.O.NG TRNH VI PH^AN
88)
Tm nghi^e.m t^o'ng quat cu'a phu.o.ng trnh vi ph^an:
3x2
(1 + lny)dx= (2y−xy3
)dyHD gia’i:D - ^ay la phu.o.ng trnh vi ph^an toan ph^an co tch ph^an t^o'ng quat la:
x3
(1 + lny)−y2
=C