3. (Steepest Descent (III) ) Suppose that we seek to minimize the following function: f($1, 12) = -911 - 1012 + 0 - In(100-r] - 12) - In(x] ) - In(12) - In(50-1 + 12), where 0 is a given parameter. Note that the domain of this function is X = {($1, 12)| $1 > 0, 12 > 0, I1 + 12