Homework Answers
%please ask 1 question at a time, this is solution for 4
f=@(x).0074*x.^4-.284*x.^3+3.355*x.^2-12.183*x+5;
df=@(x)4*.0074*x.^3-3*.284*x.^2+2*3.355*x-12.183;
x=18.15;
tolerance=10^-10;
while(abs(f(x)))>tolerance
x=x-f(x)/df(x);
end
fprintf('Root found: %f\n',x)
Add Answer to:
Function driver and script file please
4) The polynomial f (x)-0.0074x*-0.284x3+ 3.355x2 12.183x +5 has a...
4) (16 points) The function f(x)= x? – 2x² - 4x+8 has a double root at...
4) (16 points) The function f(x)= x? – 2x² - 4x+8 has a double root at x = 2. Use a) the standard Newton-Raphson, b) the modified Newton-Raphson to solve for the root at x = 2. Compare the rate of convergence using an initial guess of Xo = 1,2. 5) (14 points) Determine the roots of the following simultaneous nonlinear equations using a) fixed-point iteration and b) the Newton-Raphson method: y=-x? +x+0,75 y + 5xy = r? Employ initial...
Could someone explain these four promblems on matlab and if you do, could you write what...
Could someone explain these four promblems on matlab and if you do,
could you write what you wrote on matlab I.e. on the command window
or script. Also if you have written anything by hand can you write
neatly. Also an explain of how you did it would be greatly
appreciated.
1] 5 points) Write the following set of equations in Matrix form and use Matlab to find the solution. 50 -5x3-6x2 2x2 + 7x3-30 x1-7x3-50-3x2 + 5x1 [2] (10...
Please MATLAB for all coding with good commenting. (20) Consider the function f(x) = e* -...
Please MATLAB for all coding with good commenting.
(20) Consider the function f(x) = e* - 3x. Using only and exactly the four points on the graph off with x-coordinates -1,0, 1 and 2, use MATLAB's polyfit function to determine a 3' degree polynomial that approximates f on the interval (-1, 2]. Plot the function f(x) and the 360 degree polynomial you have determined on the same set of axes. f must be blue and have a dashed line style,...
1a): Find the roots of the following polynomial equations using matlab: f(x) = x^5 − 9x^4...
1a): Find the roots of the following polynomial equations using matlab: f(x) = x^5 − 9x^4 + 31x^3 − 51x^2 + 40x − 12 f(x) = x^5 − 11x^4 + 47x^3 − 97x^2 + 96x − 36 b): Find the coefficients of two polynomial equations in matlab given the following sets of roots: r1 = [ 100 25 50 5 10 ] r2 = [ 11 22 33 0 55 ] c): Create a figure with four subplots, each showing...
SECTION 4.3 Polynomial Division; The Factor the polynomial function f(x). Then solve the equation f(x) =...
SECTION 4.3 Polynomial Division; The Factor the polynomial function f(x). Then solve the equation f(x) = 0. 39, f(x) =x3 + 4x2 + x-6 40. fx) 5x - 2x 24 41, f(x) =x3-6x2 + 3x+10 42. f(x)-x3 + 2x2-13x + 10 43, f(x) = x3-x2-14x + 24 44.f(x) = x3-3x2 In Ex given. a): Fi b) C in gi - L 二 10x +24ー丁only, this one d) C gi ase 45' f(x) =x4-7x3 + 9x2 + 27x-54 plecs( 46, f(x)...
Using MATLAB, develop an M-file to determine LU factorization of a square matrix with partial pivoting....
Using MATLAB, develop an M-file to determine LU factorization of
a square matrix with partial pivoting. That is, develop a function
called mylu that is passed the square matrix [A] and returns the
triangular matrices [L] and [U] and the permutation P. You are not
to use MATLAB built-in function lu in your codes. Test your
function by using it to solve a system of equations listed below in
part 3. Confirm that your function is working properly by verifying...
1. This question concerns finding the roots of the scalar non-linear function f(x) = r2-1-sinx (1...
1. This question concerns finding the roots of the scalar non-linear function f(x) = r2-1-sinx (1 mark) (b) Apply two iterations of the bisection method to f(x) 0 to find the positive root. (3 marks) (c) Apply two iterations of the Newton-Raphson method to find the positive root. Choose (3 marks) (d) Use the Newton-Raphson method and Matlab to find the positive root to 15 significant (3 marks) (a) Use Matlab to obtain a graph of the function that shows...
true or false numarical method rd wneh the correct answer for the following statements: 1 Errors resulting from pressing a wrong button are called blunders 2. Using the bisection method to sol...
true or false
numarical method
rd wneh the correct answer for the following statements: 1 Errors resulting from pressing a wrong button are called blunders 2. Using the bisection method to solve fx)-+5 between x -2 and x 0, there is surely a root between -2 and-1. 3. )Single application of the trapezoidal rule is the most accurate method of numerical integration. 4. Newton-Raphson method is always convergent. 5. ()The graphical method is the most acurate method to solve systems...
6) Use MATLAB and Newton-Raphson method to find the roots of the function, f(x) = x-exp...
6) Use MATLAB and Newton-Raphson method to find the roots of the function, f(x) = x-exp (0.5x) and define the function as well as its derivative like so, fa@(x)x^2-exp(.5%), f primea@(x) 2*x-.5*x"exp(.5%) For each iteration, keep the x values and use 3 initial values between -10 & 10 to find more than one root. Plot each function for x with respect to the iteration #.
____________ % This function is a modified versio of the newtmult function obtained % from % “Ap...
____________
% This function is a modified versio of the newtmult function
obtained
% from
% “Applied Numerical Methods with MATLAB, Chapra,
% 3rd edition, 2012, McGraw-Hill.”
function [x,f,ea,iter]=newtmult(func,x0,es,maxit,varargin)
% newtmult: Newton-Raphson root zeroes nonlinear systems
% [x,f,ea,iter]=newtmult(f,J,x0,es,maxit,p1,p2,...):
% uses the Newton-Raphson method to find the roots of
% a system of nonlinear equations
% input:
% f = the passed function
% J = the passed jacobian
% x0 = initial guess
% es = desired percent relative error...
4) (16 points) The function f(x)= x? – 2x² - 4x+8 has a double root at x = 2. Use a) the standard Newton-Raphson, b) the modified Newton-Raphson to solve for the root at x = 2. Compare the rate of convergence using an initial guess of Xo = 1,2. 5) (14 points) Determine the roots of the following simultaneous nonlinear equations using a) fixed-point iteration and b) the Newton-Raphson method: y=-x? +x+0,75 y + 5xy = r? Employ initial...
Could someone explain these four promblems on matlab and if you do,
could you write what you wrote on matlab I.e. on the command window
or script. Also if you have written anything by hand can you write
neatly. Also an explain of how you did it would be greatly
appreciated.
1] 5 points) Write the following set of equations in Matrix form and use Matlab to find the solution. 50 -5x3-6x2 2x2 + 7x3-30 x1-7x3-50-3x2 + 5x1 [2] (10...
Please MATLAB for all coding with good commenting.
(20) Consider the function f(x) = e* - 3x. Using only and exactly the four points on the graph off with x-coordinates -1,0, 1 and 2, use MATLAB's polyfit function to determine a 3' degree polynomial that approximates f on the interval (-1, 2]. Plot the function f(x) and the 360 degree polynomial you have determined on the same set of axes. f must be blue and have a dashed line style,...
SECTION 4.3 Polynomial Division; The Factor the polynomial function f(x). Then solve the equation f(x) = 0. 39, f(x) =x3 + 4x2 + x-6 40. fx) 5x - 2x 24 41, f(x) =x3-6x2 + 3x+10 42. f(x)-x3 + 2x2-13x + 10 43, f(x) = x3-x2-14x + 24 44.f(x) = x3-3x2 In Ex given. a): Fi b) C in gi - L 二 10x +24ー丁only, this one d) C gi ase 45' f(x) =x4-7x3 + 9x2 + 27x-54 plecs( 46, f(x)...
Using MATLAB, develop an M-file to determine LU factorization of
a square matrix with partial pivoting. That is, develop a function
called mylu that is passed the square matrix [A] and returns the
triangular matrices [L] and [U] and the permutation P. You are not
to use MATLAB built-in function lu in your codes. Test your
function by using it to solve a system of equations listed below in
part 3. Confirm that your function is working properly by verifying...
1. This question concerns finding the roots of the scalar non-linear function f(x) = r2-1-sinx (1 mark) (b) Apply two iterations of the bisection method to f(x) 0 to find the positive root. (3 marks) (c) Apply two iterations of the Newton-Raphson method to find the positive root. Choose (3 marks) (d) Use the Newton-Raphson method and Matlab to find the positive root to 15 significant (3 marks) (a) Use Matlab to obtain a graph of the function that shows...
true or false
numarical method
rd wneh the correct answer for the following statements: 1 Errors resulting from pressing a wrong button are called blunders 2. Using the bisection method to solve fx)-+5 between x -2 and x 0, there is surely a root between -2 and-1. 3. )Single application of the trapezoidal rule is the most accurate method of numerical integration. 4. Newton-Raphson method is always convergent. 5. ()The graphical method is the most acurate method to solve systems...
6) Use MATLAB and Newton-Raphson method to find the roots of the function, f(x) = x-exp (0.5x) and define the function as well as its derivative like so, fa@(x)x^2-exp(.5%), f primea@(x) 2*x-.5*x"exp(.5%) For each iteration, keep the x values and use 3 initial values between -10 & 10 to find more than one root. Plot each function for x with respect to the iteration #.
____________
% This function is a modified versio of the newtmult function
obtained
% from
% “Applied Numerical Methods with MATLAB, Chapra,
% 3rd edition, 2012, McGraw-Hill.”
function [x,f,ea,iter]=newtmult(func,x0,es,maxit,varargin)
% newtmult: Newton-Raphson root zeroes nonlinear systems
% [x,f,ea,iter]=newtmult(f,J,x0,es,maxit,p1,p2,...):
% uses the Newton-Raphson method to find the roots of
% a system of nonlinear equations
% input:
% f = the passed function
% J = the passed jacobian
% x0 = initial guess
% es = desired percent relative error...
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