The Total solution for NCERT class 6-12
Using integration findthe area of the triangular region whose sides have the equations y =2x +1, y = 3x + 1 and x =4.
The equations of sidesof the triangle are y = 2x +1, y =3x + 1, and x = 4.
On solving theseequations, we obtain the vertices of triangle as A(0, 1), B(4, 13), and C (4,9).
It can be observed that,
Area (ΔACB) = Area(OLBAO) –Area (OLCAO)