GIA'I PHU.O.NG TRNH

72) - 201-bai-tap-phuong-trinh-vi-phan
201-bai-tap-phuong-trinh-vi-phan
72)

Gia'i phu.o.ng trnh:

xy

0

−2x

2

√y= 4yHD gia’i:

Phu.o.ng trnh Bernouilli, da.t

z =y

1−α

=√y⇒z

0

= 2√1y

phu.o.ng trnh tro.' thanh:

z

0

− 4xz = 2x→

NTQ

z=Cx

4

−x

2

V^a.y nghi^e.m t^o'ng quat:

y= (Cx

2

−1)

2

x

4

.