%Define variables used in function
a=0;
b=1;
tol=0.00001;
p=0;
i=0;

%Define function
f=@(x)(exp(x)-x^2+3*x-2);

%Set to loop while p is above the desired tolerance
while abs(0.257530-p)>=tol
    p=(a+b)/2;
    if f(p)>0 && f(a)>0 || f(p)<0 && f(a)<0
        a=p;
    else
        b=p;
    end
    i=i+1;
end
disp(p);
disp(i);