Area bounded by the lines y = |x| – 2 and y = 1 – | x – 1 | is equal to
Correct Answer :
4 sq. units
Solution :
The correct option is 4 sq. units.
To find the area bounded by the two curves, we first analyze their equations:
1.
2.
Let us analyze the shape and vertices of both functions:
- The first curve, , is a V-shaped curve with its vertex at that opens upwards.
- The second curve, , is an inverted V-shaped curve with its vertex at that opens downwards.
Now, we find the points of intersection of the two curves by analyzing them in different intervals:
Case 1:
Here, and .
The equations become:
Equating them: .
Thus, one intersection point is .
Case 2:
Here, and .
The equations become:
Equating them: .
Thus, the other intersection point is .
The bounded region is a quadrilateral with vertices at the intersection points and the vertices of the two V-graphs:
- Vertex
- Vertex
- Vertex
- Vertex
We can calculate the area of this quadrilateral by dividing it into two triangles along the diagonal or by using the coordinates formula for the area of a polygon:
Let's compute the area using the formula:
Therefore, the area bounded by the lines is indeed 4 sq. units.
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