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Mathematics Worksheet

🏆 Optimization

Chapter: Differential Calculus · Level ★★★ · Time: 30 min
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After this worksheet you can
Translate a word problem into an objective function.Use a constraint to reduce the problem to a single variable.Find maxima and minima by solving f′(x) = 0.Check endpoints for absolute extrema.

🧠 Section A · Concept Check ● BEGINNER 4 × 1 = 4

1A rectangle with perimeter 100 has maximum area with dimensions:
2Two numbers with sum 50 have maximum product when they are:
3To optimize, you first set ___ equal to 0:
4Minimize C(x) = 2x2 − 40x + 300; the minimum is at x =

🧮 Section B · Problem Solving ● INTERMEDIATE 2 + 3×3 = 11

5Set the first derivative equal to to find critical points.
6A rectangle of fixed perimeter has maximum area when it is a .
7A rectangle has perimeter 100. Find the dimensions that maximize area.
8Find two numbers with sum 50 whose product is maximum.
9Minimize C(x) = 2x2 − 40x + 300.

🚀 Section C · Challenge ● CHALLENGE 5

10Maximize P(x) = −x2 + 12x.
💭 Reflection — the most useful thing I learned:
A ___/4   B ___/11   C ___/5   Total ___/20 Teacher's Signature Parent's Signature
✂ answer key — fold or cut before handing out

1-B   2-A   3-B   4-B  |  5 0   6 square   7 = 25 by 25   8 = 25 and 25   9 = Minimum at x = 10, C = 100  |  10 = Maximum at x = 6, P = 36

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