Use the MATLAB Function to find the relative minimum of the

Use the MATLAB Function to find the relative minimum of the function: f(x) = sin x + cos x, on[3, 6, 5]

Solution

There is no such function called parabint; however fminbnd function is available to find minimum of a function within a bound. the syntax is x = fminbnd(fun,x1,x2)

here we need to find minima of the function sin X + cos X

matab code

fx = diff(f,x) % 1st derivative of function

xc = solve(fx) %critical point by solving fx=0

then we get 2 critical points for the function, the minimum one is the minima.