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Let them be given positive parameters: k and e. Lets consider linear spline S(x) lean on...
1. Consider the polynonial Pl (z) of degree 4 interpolating the function f(x) sin(x) on the interval n/4,4 at the equidistant points r--r/4, xi =-r/8, x2 = 0, 3 π/8, and x4 = π/4. Estimate the maximum of the interpolation absolute error for x E [-r/4, π/4 , ie, give an upper bound for this absolute error maxsin(x) P(x) s? Remark: you are not asked to give the interpolation polynomial P(r). 1. Consider the polynonial Pl (z) of degree 4...
Let f(x) k sin(kx), where k is a positive constant (a) Find the area of the region bounded by one arch of the graph f and the x -axis. b) Find the area of the triangle formed by the x -axis and the tangents to one arch nts to one arch of f at the points where the graph of f crosses the x -axis Let f(x) k sin(kx), where k is a positive constant (a) Find the area of...
Please explain the solution and write clearly for nu, ber 25. Thanks. 25. Approximate the following functions f(x) as a linear combination of the first four Legendre polynomials over the interval [-1,1]: Lo(x) = 1, Li(x) = x, L2(x) = x2-1. L3(x) = x3-3x/5. (a) f(x) = X4 (b) f(x) = k (c) f(x) =-1: x < 0, = 1: x 0 Example 8. Approximating e by Legendre Polynomials Let us use the first four Legendre polynomials Lo(x) 1, Li(x)...
Using hand work for the parts with a paper next to them, and MatLab for the parts with the MatLab logo next to them, complete the following: Consider the linear BVP 4y " + 3y , + y = 0, 0<x<1 y(0)1 You will define a set of linear equations for yi,0, (yi y(Xi), 1 = o,.. . ,n) and the set of nodes is with xi-ih, 1-0, . . . , n and h =-. n is a fixed...
1) Let f(x) = 1 sin x, x E R , and consider the discrete-time dynamics given by xn+1 = f(xn), n = 0.1, 2, . . . How many fixed points are there? Stable or unstable?
6. Consider f(x)-sinx and evenly spaced nodes 0-0 < xīく… < Zn-2T. Let P(z) be the piecewise cubic interpolant given values and first derivatives of f at the nodes. (a) In the case n = 100, use calculus and the error formula 4! where 1 E [xi,Ti+1], to bound the absolute error lf(1)-P(1) (b) For arbitrary x E [0.2 , use error bounds to determine n ensuring that If(x)- P(x) s 10-10 6. Consider f(x)-sinx and evenly spaced nodes 0-0
Let k 21 be a positive integer, and let r R be a non-zero real number. For any real number e, we would like to show that for all 0 SjSk-, the function satisfies the advancement operator equation (A -r)f0 (a) Show that this is true whenever J-0. You can use the fact that f(n) = crn satisfies (A-r)f = 0. (b) Suppose fm n) satisfies the equation when m s k-2 for every choice of c. Show that )...
(1) Let 0 0O | f(x) dx +ynf(n). 1(f)= Show that I K(R)R is a well-defined positive linear functional. Then find a regular Borel measure μ such that 1(f)-Jfd,1 for every f K(R). (1) Let 0 0O | f(x) dx +ynf(n). 1(f)= Show that I K(R)R is a well-defined positive linear functional. Then find a regular Borel measure μ such that 1(f)-Jfd,1 for every f K(R).
Question 8 (Chapters 6-7) 12+2+2+3+2+4+4-19 marks] Let 0メS C Rn and fix E S. For a E R consider the following optimization problem: (Pa) min a r, and define the set K(S,x*) := {a E Rn : x. is a solution of (PJ) (a) Prove that K(S,'). Hint: Check 0 (b) Prove that K(S, r*) is a cone. (c) Prove that K(S,) is convex d) Let S C S2 and fix eS. Prove that K(S2, ) cK(S, (e) Ifx. E...