Exercise · ZW-OPTIMIZATION-PROBLEM-007 · ★★☆ Intermediate
Compute the minimum of \(f(x)=x^2-4x+7\) over all reals.
Choose one option.
Show answer
- C. 3
Explanation
Since \(f'(x)=2x-4=0\) gives \(x=2\), and \(f(2)=4-8+7=3\). The value 7 is \(f(0)\), which is not the minimum.
Review the concept: Optimization problem
An optimization problem consists of minimizing or maximizing an objective function \(f\) over a set of points that satisfy certain constraints.
\[\min_{x \in \mathbb{R}^n} f(x) \quad \text{sujeto a} \quad g_i(x) \le 0\]
More practice problems: optimization problem
- ZW-OPTIMIZATION-PROBLEM-001 What is the general form of an optimization problem with inequality constraints?
- ZW-OPTIMIZATION-PROBLEM-002 What is the name of the function that is minimized in an optimization problem?
- ZW-OPTIMIZATION-PROBLEM-003 What is the name of the set of points that satisfy all the constraints?
- ZW-OPTIMIZATION-PROBLEM-004 What does it mean to minimize a function over a set?
- ZW-OPTIMIZATION-PROBLEM-005 What kind of problem is minimizing f(x)=x^2 with no constraints?
- ZW-OPTIMIZATION-PROBLEM-006 Minimize f(x,y)=x^2+y^2 subject to x+y=4. What is the minimum value?
- ZW-OPTIMIZATION-PROBLEM-008 Maximize f(x,y)=xy subject to x+y=10. What is the maximum value?
- ZW-OPTIMIZATION-PROBLEM-009 Minimize f(x,y)=(x-1)^2+(y-2)^2 subject to x+y≤ 1. What is the optimal point?