Using integration find the area of the triangular region whose sides have equations y=2x+1, y=3x+1 and x=4.
Equations of the lines are y = 2 x + 1, y = 3 x + 1 and x = 4.
Let y1 = 2 x + 1, y2 = 3 x + 1
Now area of the triangle bounded by the given lines,
= 8 sq. units
Thus, the area of the required triangular region is 8 square units