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CIII_6.HLP
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1989-10-26
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985b
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37 lines
AREA BETWEEN TWO CURVES
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Theorem : If f and g are continuous functions and if f(x) ≥ g(x)
for all x in [a,b], then the area of the region bounded
above by y = f(x), below by y = g(x), on the left by
the line x = a, and on the right by the line x = b, is
b
⌠
│ [f(x) - g(x)] dx
⌡
a
Theorem : If w and v are continuous functions and of w(y) ≥ v(y)
for all y in [c,d], then the area of the region bounded
on the left and right by x = v(y), x = w(y), and above
and below by the lines y = d, and y = c is
d
⌠
│ [w(y) - v(y)] dy
⌡
c
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