In this section we will see solved problems of  lesson 1, Lesson 2 and lesson 3 .

Example 1:

Solution:

Example 2:

Solution:

Example 3:

Solution:

Example 4:

Solution:

Example 5:

Solution:

 Example 6:

Solution:

Example 7:

Solution:

Example 8:

Solution:

Example 7:

 

Example 8:

Example 9:

Example 10:

a)

b)   

Solution:

a)   

b)

Example 11:

Solution:

Example 12:

Solution:

Example 13:

Solution:

Example 14:

Solution: