I have completed part 1 and part 2, but need help with part 3.

The answer for both is either +inf, -inf, or 0.

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Find the exact global maximum and minimum of the function gix) = Bx - x2 1? . vPartl Your answer is correct. To nd the global maximum and minimum of a continuous function on an interval or the entire real line, we nd the values of the function at all the critical points. To start this problem we need to nd the rst derivative of g(x) = Bx - x2 - 1? . g'ixi= V Fart! Your answer is correct. We found g r (x) = B - 2x . Now set this equation to {1 and solve this equation for thu nd the critical points. X: VPart3 To determine the points are global maximum or minimum points we need to examine the behavior of 90:) as x i an over the interval. Below, \"inf" means no . a) 0n the intervaix