Question

Apply Secant method Perform 3 iterations using MATLAB 26. e - tanx = 0, xo = 1, x1 = 0.7

Answer 1

Required Matlab code with explanatory comments is given below:

START CODE

x=[1,0.7];
f=@(x) exp(-x)-tan(x);
for k=1:3 %3 iterations
    x(k+2)=(x(k)*f(x(k+1))-x(k+1)*f(x(k)))/(f(x(k+1))-f(x(k))); %secant method
end
display(x(end));

END CODE

And the output:

Command Window >> Q secant f(x (end)) %check 0.5314 ans -6.8448e-05 |fx >

$\blacksquare$

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