(5) Consider the problem: minimize I[r(.)] - /r2 dt 0 subject to the conditions x(0)-x()-0 and the constraint 0 R is a C2 function that solves the above Suppose that x : [0, π] Let y : [0, π] → R be any other C2 function such that y(0) = Define problem y(n) 0. 0 an a(s) a. Explain why α(0)-1 and i'(0) b. Show that 0. i'(0)r'(t) y'(t) dt -X /x(t) y(t) dt 0 0 for some constant λ,...
Consider the problem minimize 1[r(-)] = 2 / r,(t)2 dt subject to the conditions r(0) - r(T)0 and the constraint 0 r(t)2 dt 1. = Suppose that r : [0, π] R is a C2 function that! solves the above Let y : [0, π] R be any other C2 function such that y(0) Define problem a(s): (r(t) + sy(t))2 dt and a(s) a. Explain why a(0) 1 and i'(0) 0. b. Show that i'(0)= | z'(t) y' (t) dt-X...
dn (a) Show that L[i" f(t)] = (-1)" (t) for any positive integer n 2 1 dsn a d K(s, t)f(t) dt / ) est = tne-8t and assume that K(s, t)f(t) dt. Hint: (-1)" as ds (b) Use the above formula to compute L[t? cost]. dn (a) Show that L[i" f(t)] = (-1)" (t) for any positive integer n 2 1 dsn a d K(s, t)f(t) dt / ) est = tne-8t and assume that K(s, t)f(t) dt. Hint:...
12. (a) Show that 1y dt By letting R o, deduce that the residue of f ) at t 0. at zoo by the equation f (z) dz is given by 2πί times (b) When zoe is an isolated singular point, define the residue of f () Show that (e)d2miRes () Coo (c) Use the above result to evaluate the integral Ca2 + 22 z where C is any positive contour enclosing the points z 0, tia, and check the...
If we are given the improper integral definition of the gamma function above, i) show that , a>-1 where ii) show that iii) Given that , find the laplace transform of please show all steps for all parts 0<'FP 2-0 1-07 OU = (20).J T + 5 Si = {27}] (I+D)) [{f(t)} = S.*f(t)e-stat T(a + 1) = al(a) r(a) = var f(t) = 43/2
7. (12 pts) The gamma function is defined by l(a) = Soy-le-Vdy for a > 0. (a) Integrate and show (2) = 1. (Vb) Given r(a) = (a - 1)T(0 - 1) for a > 1. Use this and your answer to part a, show that I(n) = (n - 1)! for integers n 21. Be sure to clearly indicate where you used part a.
a) Show that the series CO (e n 0 n 0 on the interval 10, co towards the function Converges pointwise 1 t e]0, co[ f(t) 1 — е- b) Show that the series CO пе-nt п3D0 converges uniformly for t in the interval [b, o for every constant b > 0. Let CO ne nt t> 0, s(t) n 1 be the sum function of the series. J0, co[ d) Show thatf'(t) = -s(t) for all t > 0...
Elementary Laplace Transtorms Y(S) = {f} -L e-stf(t)dt fc = C-'{F(s)} F(s) = {f} f(t) =-'{F(s)) F(s) = {f} -CS 1. 1 1 12. uct) le S> 0 S> 0 . s S 2. eat 1 13. ucOf(t-c) e-csF(s) S> a S-a n! 3. t",n e Z 14. ectf(t) F( sc) S> 0 sh+1 4. tP, p>-1 (p+1) S> 0 SP+1 15. f(ct) F). c>0 16. SFt - 1)g(t)dt F(s)G(*) 5. sin at S> 0 16. cos at 17. 8(t...
8. The position vector r of a point P is a function of the time t and r satisfies the vector differential equation d2r dr 2k (k2 n2)r g, dr2 where k and n are constants and g is a constant vector. Solve dr a and dt this differential equation given that r v when t = 0, a and v being constant vectors Show that P moves in a plane and write down the vector equation of this plane...