Concept:The area under the curve can be found by integrating the function between the given limits.
Since
y=∣x−4∣ changes its definition at
x=4, the integral must be split into two parts.
Explanation:The curve
y=∣x−4∣ lies above the X-axis for all
x from
3 to
5.
Thus, the required area is the area under this curve from
x=3 to
x=5.
For
3≤x≤4, we have:
∣x−4∣=4−xFor
4≤x≤5, we have:
∣x−4∣=x−4So the total area is given by:
Area=∫34​(4−x)dx+∫45​(x−4)dxEvaluate the first integral:
∫34​(4−x)dx=[4x−2x2​]34​=(16−8)−(12−29​)=8−215​=21​Evaluate the second integral:
∫45​(x−4)dx=[2x2​−4x]45​=(225​−20)−(216​−16)=(−215​)−(−8)=21​Therefore, the total area is:
21​+21​=1So the area of the required region is
1 square unit.
Answer:The area of the region is
1 sq. unit.
Correct option: D.