Chapter 13: Q25E (page 561)
In Problems 29 and 30 use (22) or (23) to obtain the given result.
\(\int_0^x r {J_0}(r)dr = x \times {J_1}(x)\)
Short Answer
The obtained integral is \(\int_0^x r {J_0}(r)dr = x{J_1}(x)\).
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Chapter 13: Q25E (page 561)
In Problems 29 and 30 use (22) or (23) to obtain the given result.
\(\int_0^x r {J_0}(r)dr = x \times {J_1}(x)\)
The obtained integral is \(\int_0^x r {J_0}(r)dr = x{J_1}(x)\).
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Use the recurrence relation in Problem 28 along with (26) and (27) to express \({J_{3/2}}(x),{J_{5/2}}(x),{J_{ - 3/2}}(x),{J_{ - 5/2}}(x)\) in terms of \(sinx,cosx\), and powers of .
Show that \(y = {x^{1/2}}w\left( {\frac{2}{3}\alpha {x^{3/2}}} \right)\) is a solution of the given form of Airy’s differential equation whenever w is a solution of the indicated Bessel’s equation. (Hint: After differentiating, substituting, and simplifying, then let \(t = \frac{2}{3}\alpha {x^{3/2}}\))
(a) \(y'' + {\alpha ^2}xy = 0,x > 0;{t^2}w'' + tw' + \left( {{t^2} - \frac{1}{9}w} \right) = 0,t > 0\)
(b) \(y'' - {\alpha ^2}xy = 0,x > 0;{t^2}w'' + tw' - \left( {{t^2} - \frac{1}{9}w} \right) = 0,t > 0\)
Use the result in parts (a) and (b) of Problem 36 to express the general solution on \((0,\infty )\) of each of the two forms of Airy’s equation in terms of Bessel functions.
(a) Use the general solution given in Example 5 to solve the IVP \(4x'' + {e^{ - 0.1t}}x = 0,x(0) = 1,x'(0) = - \frac{1}{2}\). Also use \(J_0^'(x) = - {J_1}(x)\) and \(Y_0^'(x) = - {Y_1}(x)\) along with Table 6.4.1 or a CAS to evaluate coefficients.
(b) Use a CAS to graph the solution obtained in part (a) for \(0 \le t < \infty \).
In Problems 29 and 30 use (22) or (23) to obtain the given result.
\(\int_0^x r {J_0}(r)dr = x \times {J_1}(x)\)
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