Question

Write a program that evaluates the function f(x) = tan’x + x - 2 between -27 and 27 in steps of 1/10 and plots the results. Create a function handle for your function, and use function feval to evaluate your function at the specified points. 2. Write a program that locates the zeros of the function f(x) = cos éx -0.25 between 0 and 27. Use the function fzero to actually locate the zeros of this function. Plot the function over that range and show that fzero has reported the correct values.

i need Matlab code asap

Answer 1

1. Solution

% myFunction.m

% defining myFunction for question 1
function f = myFunction(x)
  
f = tan(x).^2 + x -2;
  
end

% driver.m

% create funtion handler for myFunction
fun = @myFunction;

% initialize the given range with pi/10 step
r = -2*pi: pi/10 : 2*pi;

% use feval to evaluate fun in range r
result = feval(fun, r);

% Now plot the result
plot(r, result);

% SCREENSHOTS

% myFunction.m

1 $defining myFunction for question 1 function f = myFunction(x) N 3 f = tan(x).^2 + x -2; 5 6 - end

% driver.m

1 create funtion handler for myFunction fun = @myFunction; 2 - 3 4 initialize the given range with pi/10 step r = -2*pi: pi/10 : 2*pi; 5 6 7 use feval to evaluate fun in range r result = feval(fun, r); 8 - 9 10 Now plot the result plot(r, result): 11 -

%OUTPUT (plot of results)

331032 2.5 2 1.5 1 0.5 0 -0.5 -8 -6 -4 -2 0 2 4 6 8