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:

3x

2

(1 + lny)dx= (2yxy

3

)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:

x

3

(1 + lny)−y

2

=C