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

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## Long Answer (L. A.)

**Question 25**:

Solve:

**Answer**:

Given differential equation is

Dividing both sides by we get

Which is a linear differential equation.

On comparing it with we get

The complete solution is

The general solution is

Now,

And

On substituting of value of

**Question 26**:

Find the general solution of .

**Answer**:

Given differential equation is

On dividing throughout by

Dividing both sides by

Which is a linear differential equation

On comparing it with

The general solution is

**Question 27**:

Solve:

**Answer**: