Let f(z) be a continuous decreasing function defined for z > 0. Let S(x) = f(t) dt %3D and S(1) = 1. For any a > 0, the area bounded by the following is 3S(a): (a) the line joining the origin and the point (a, f(a))

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Let f(x) be a continuous decreasing function defined for z >0. Let
S(z) =
| f(t) dt
and S(1) = 1.
For any a > 0, the area bounded by the following is 3S(a):
(a) the line joining the origin and the point (a, f(a))
(b) the line joining the origin and the point (2a, f(2a))
(c) the curve y = f(x).
Express S(r) and f(r)-2f(2r) as a function of r.
Let
a(x) = lim 2" f (2"r)
Find the value of the integral | a(t) dt.
Determine the function f(r)
Transcribed Image Text:Let f(x) be a continuous decreasing function defined for z >0. Let S(z) = | f(t) dt and S(1) = 1. For any a > 0, the area bounded by the following is 3S(a): (a) the line joining the origin and the point (a, f(a)) (b) the line joining the origin and the point (2a, f(2a)) (c) the curve y = f(x). Express S(r) and f(r)-2f(2r) as a function of r. Let a(x) = lim 2" f (2"r) Find the value of the integral | a(t) dt. Determine the function f(r)
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