# NCERT Class 12-Mathematics: Chapter – 9 Differential Equations Part 6 (For CBSE, ICSE, IAS, NET, NRA 2022)

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## 9.3 EXERCISE

### Short Answer (S. A)

**Question 1**:

Find the solution of

**Answer**:

Given that,

On integrating both sides, we get

**Question 2**:

Find the differential equation of all non-vertical lines in a plane.

**Answer**:

Since, the family of all non-vertical line is , where

On differentiating we get

Again, differentiating we get

**Question 3**:

Given that and when .

Find the value of when .

**Answer**:

**Question 4**:

Solve the differential equation

**Answer**:

**Question 5**:

Solve the differential equation

**Answer**:

**Question 6**:

Find the general solution of

**Answer**:

**Question 7**:

Solve the differential equation

**Answer**:

**Question 8**:

Solve: .

**Answer**:

**Question 9**:

Solve the differential equation

**Answer**:

**Question 10**:

Find the general solution of

**Answer**: