# NCERT Class 12-Math's: Chapter –9 Differential Equations Part 13

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Question 39:

Solution of differential equation represents:

(A) A rectangular hyperbola

(B) Parabola whose vertex is at origin

(C) Straight line passing through origin

(D) A circle whose centre is at origin

Question 40:

Integrating factor of the differential equation is:

(A)

(B)

(C)

(D)

Question 41:

Solution of the differential equation is:

(A)

(B)

(C)

(D)

Question 42:

Family of curves is represented by the differential equation of degree:

(A)

(B)

(C)

(D)

Question 43:

Integrating factor of is

(A)

(B)

(C)

(D)

Question 44:

Solution of is given by

(A)

(B)

(C)

(D)

Question 45:

The number of solutions of when is:

(A) None

(B) One

(C) Two

(D) Infinite

Question 46:

Which of the following is a second order differential equation?

(A)

(B)

(C)

(D)

Question 47:

Integrating factor of the differential equation is

(A)

(B)

(C)

(D)

Question 48:

is the general solution of the differential equation:

(A)

(B)

(C)

(D)