106–111. Surfaces of revolution Let C be the curve x = f(t), y = g(t), for a

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Chapter1: Functions And Models
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106–111. Surfaces of revolution Let C be the curve x = f(t),
y = g(t), for a <ts b, where f' and g' are continuous on [a, b]
and C does not intersect itself, except possibly at its endpoints. If g
is nonnegative on [a, b], then the area of the surface obtained by
revolving C about the x-axis is
s = ["278(1) VF"(1)² + g'(1)² dt.
Likewise, if f is nonnegative on [a, b], then the area of the surface
obtained by revolving C about the y-axis is
s = [2mf(1) VF'(0)} + 8'(1)* dt.
Find the area of the surface obtained by revolving one arch of the
cycloid x – t
sin t, y – 1 - cos t, for 0 < t < 21, about the
4-ахis.
Transcribed Image Text:106–111. Surfaces of revolution Let C be the curve x = f(t), y = g(t), for a <ts b, where f' and g' are continuous on [a, b] and C does not intersect itself, except possibly at its endpoints. If g is nonnegative on [a, b], then the area of the surface obtained by revolving C about the x-axis is s = ["278(1) VF"(1)² + g'(1)² dt. Likewise, if f is nonnegative on [a, b], then the area of the surface obtained by revolving C about the y-axis is s = [2mf(1) VF'(0)} + 8'(1)* dt. Find the area of the surface obtained by revolving one arch of the cycloid x – t sin t, y – 1 - cos t, for 0 < t < 21, about the 4-ахis.
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