Solve each of the following in equations and represent the solution set on the number line.
< 2, x ϵ R.
Given:
< 2, x ϵ R.
-2 < < 2
> -2 and
< 2
When,
> -2
Adding 2 to both sides in the above equation
+ 2 > -2 + 2
> 0
> 0
> 0
Signs of 4x – 3:
4x – 3 = 0 →
(Adding 3 to both sides and then dividing both sides by 4)
4x – 3 > 0 →
(Adding 3 to both sides and then dividing both sides by 4)
4x – 3 < 0 →
(Adding 3 to both sides and then dividing both sides by 4)
Signs of x – 1:
x – 1 = 0 → x = 1 (Adding 1 to both the sides)
x – 1 > 0 → x > 1 (Adding 1 to both the sides)
x – 1 < 0 → x < 1 (Adding 1 to both the sides)
At x = 1, is not defined.
Intervals that satisfy the required condition: > 0
or x > 1
Now, when < 2
Subtracting 2 from both the sides
-2 < 2 -2
< 0
< 0
< 0
Signs of x – 1:
x – 1 = 0 → x = 1 (Adding 1 on both the sides)
x – 1 < 0 → x < 1 (Adding 1 on both the sides)
x – 1 > 0 → x > 1 (Adding 1 on both the sides)
At x = 1, is not defined
Interval which satisfy the required condition: < 0
x < 1
Now, combining the intervals:
or x > 1 and x <1
Merging the overlapping intervals:
Therefore,