# Find the area bounded by curve x² = 4y & line x = 4y-2 . Explain each step & the figure ,i m nt able to understand its figure

1
by Mukss

2015-10-19T22:22:20+05:30

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X² = 4 y      and      x = 4 y - 2  ie.,,  y =  x / 4 + 1/2

area bounded by them... we find it by the integration..

the parabola x² = 4 y  has  axis as  x = 0  ie.,  y axis.  Focus is at  (0, 1) and its vertex is at origin.  It is like  a  U curve standing on the x axis at the origin.

The line intersects the x axis at (-2, 0) and  y axis at the point (0, 1/2).

these two graphs intersect at :
x² = 4 y =  (4 y - 2)²
=>  4 y² - 5y + 1  = 0
=>  y  =  1  or  1/4
=>  x =  2  or  -1

Thus  we have to find the area bound between the two curves between the points  (2,1 ) and (-1, 1/4).

we know that the straight line is above the x axis when it cuts the curve.  y1(x) is the line. and y2 (x) is the parabola.