%exercise0-2
format rat

left = 0
right = 1
middlepoint = (right+left)/2
for i = 1:7
   
    if (exp(middlepoint)+10*middlepoint-2)*(exp(left)+10*left-2)>=0;
        left = middlepoint;
    else
        right = middlepoint;
    end
     middlepoint = (right+left)/2;
    i
    left
    right
    middlepoint
end
middlepoint