Example 1
Solve the equation 
in
R
Solution
or
x=0}
But 
has
no solutions in R so x=0 is the solution of the equation in R
Example 2
Solve the equation 
in
R
Solution
x=0 or 
x=0
or 
Example 3
Solve in C the equation 
(1)
Solution
(1) can be written as 
and
has the following solutions:
Exercise 1
Solve the equation 
(1)
Exercise 2
Solve the equation 
