Problem 4: (Numerical Integration) Given: u(x)-f (x)+K(x.t) u(t) dr Where a and b and the function f and K are given. To approximate the function u on the interval [a, b]. a partition j a < xi <...
7. (15 pts) Numerical Integration. Given a continuous function f (x) on the interval [a, b], write the Lagrange form of the quadratic polynomial interpolating f(a), (a b)), f(b). Instead of calculating the integral I(f) Jaf(x)dx we could approximate it via Q(f) = | q(x)dx. Find an expression for this quadrature rule, the so-called Simpson's rule.
(4.2) Consider the integral -f 1 J dec 1+3 (a) Show that (4) 1 da 1 +x3 dr 1+r3 (b) Deduce that (3) -re) J f() dr where f is a function to be determined (8) and the (c) Approximate J by means of the three-term Gaussian Quadrature Hint: The roots of the third Legendre polynomial are xo corresponding coefficients for the three-term Gaussian Quadrature are co =,C= , C2= 15 15, 1 0, 32 5 Y 9 (2) (25]...
Please answer with work Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to 4 your sketch the rectangles associated with the Riemann sum f(ck) Axk, using the indicated point in the kth k=1 subinterval for ck. Then approximate the area using these rectangles. 20) f(x) = cos x + 4, [0, 2TT), right-hand endpoint a) Graph: 2 7 22 b) What is the right Riemann sum from 0 to...
Evaluate the line integral ∫ F *dr where C is given by the vector function r(t). F(x, y, z) = (x + y2) i + xz j + (y + z) k, r(t) = t2i + t3j − 2t k, 0 ≤ t ≤ 2
5. Let f a, b R be a 4 times continuously differentiable function. For n even, consider < tn = b, a to < t< an uniform partition of [a, b] with b- a , i = 0,1,.. , n - 1 h t Let T denote the composite Trapezoidal rule associated with the above partition which approx imates eliminate the term containing h2 in the asymptotic expansion. Interprete the result which you obtain as an appropriate numerical quadrature rule...
Problem 4 A definite integral I is given as .b I=| f(x) dr a=0 b=2 f(x) = e-r' ; ; ; Evaluate the integral using the three-point Gaussian quadrature method Solution: Problem 4 A definite integral I is given as .b I=| f(x) dr a=0 b=2 f(x) = e-r' ; ; ; Evaluate the integral using the three-point Gaussian quadrature method Solution:
For a vector field F(x)(2yarctanx)j find a function f such that F,y)-V/ h(2yarctanx)j find a function f such that F(x,y)-U For a vector field F(x,y)- 1+x2 and use this result to evaluate dr, where C: rit2, osis1 For a vector field F(x)(2yarctanx)j find a function f such that F,y)-V/ h(2yarctanx)j find a function f such that F(x,y)-U For a vector field F(x,y)- 1+x2 and use this result to evaluate dr, where C: rit2, osis1
numerical analysis 3. 135 points/ The following data have been recorded for a function f(a). 2 3 (2.4142 2.6734 2.8974 3.0976 3.2804 r5 Use Romberg's method to approximate f f(r)dr by completing the following table where R1,1 R2,1 R2.2 R3.1 R32 Rs3 Rki is the composite trapezoidal approximation of「f(x)dr when the interval [1,5) is Rk j-1 Rk-1J-1 for 2,3 and divided into n subinterval(s), and Rkjk-+411 3. 135 points/ The following data have been recorded for a function f(a). 2...
2. Consider the following 1-D wave equation with initial condition u (x, 0)- F (x) where F(x) is a given function. a) Show that u (x, t)-F (x - t) is a solution to the given PDE. b) If the function F is given as 1; x< 10 x > 10 u(x, 0) = F(x) = use part (a) to write the solution u(x, t) c) Sketch u(x,0) and u(x,1) on the same u-versus-x graph d) Explain in your own...
(40 pts) 2a. Show that u(z) is the solution to the problem where k(x)-1 for x < 1/2 and k = 2 for x > 1 /2. 2b. Set up the weak form for the differential equation above and the resulting element stiffness and element load vector and calculate the element stiffness matrix and load vector for 4 quadratic elements by using the Gaussian quadrature that is going to exactly calculate the integrals Then set up the global K and...