To find the min and max we need to find the first derivative.
To find the inflection points we solve f'(x)=0, since the exponential function can not be zero, all we have to solve is
-1-x=0 => x=-1
To determine if this is a max or min, we need to find the 2nd derivative.
`f''(-1)=e^(-1)(-2+1)=-1/e<0` Hence we are looking at a max.
Let's find its y-coord.
Thus the max is `(-1,1/e+2)`