Mathematics - II (3110015) MCQs

MCQs of Differential Equations of First Order

Showing 31 to 34 out of 34 Questions
31.
P dx+xsiny dy=0 is exact, then P is ....
(a) siny+cosy
(b) -siny
(c) cosy
(d) x2-cosy
Answer:

Option (d)

32.
For what value of k, (x3+3xy2) dx+(kx2y+y3) dy=0, be an exact differential equation?
(a) k=3
(b) k=6
(c) k=2
(d) None
Answer:

Option (a)

33.
Solution of p2+px+py+xy=0 is .....
(a) (2y+x2-c)(x+lny-c)
(b) (2y+x22-c)(x+lny-c)
(c) (y+x2-c)(y+lnx-c)
(d) (2y+x2-c)(x+1y2-c)
Answer:

Option (a)

34.
Find the I.F. for y'+y·tanx=sin2x
(a) lnsecx
(b) ln (1+x2)
(c) lncosecx 
(d) None
Answer:

Option (d)

Showing 31 to 34 out of 34 Questions