question_answer 15)

Using integration, find the area of triangular region whose sides have the equations y = 2x + 1, y = 3x + 1 and x = 4. 

Answer:

The equation of sides of the triangle are             y = 2x + 1                                 ?. (1)             y = 3x + 1                                 ?. (2)             x = 4                                         ?. (3)             (1) and (2)  and y  = 1       Let   A =  (0, 1) (1)   and (3)  and y = 9 Let   B = (4, 9) (2)   and (3) and y = 13 Let              C = (4, 13) Area