Sponsor Area

Application Of Integrals

Question
CBSEENMA12035753

Using integration, find the area bounded by the curve x2 = 4y and the line x = 4y – 2.

Solution

The shaded area OBAO represents the area bounded by the curve x2 = 4y and the line x = 4y – 2.
WiredFaculty
Let A and B be the points of intersection of the line and parabola.
Co-ordinates of point A are open parentheses negative 1 comma space 1 fourth close parentheses. space Co-ordinates of point B are (2, 1).
Area OBAO = Area OBCO + Area OACO   ...(1)
Area OBCO = 
WiredFaculty
Area OACO = 
  WiredFaculty
Therefore, required area = open parentheses 5 over 6 plus 7 over 24 close parentheses space equals 9 over 8 sq. units