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MATHEMATICS
Alternatively, we may consider the vertical
strips like PQ as shown in the Fig 8 10 to
obtain the area of the region AOBA To this
end, we solve the equations x2 = y and y = 4
which gives x = –2 and x = 2 Thus, the region AOBA may be stated as
the region bounded by the curve y = x 2, y = 4
and the ordinates x = –2 and x = 2