Math Problem Statement
Um pequeno agricultor disp˜oe de 200 m de tela, com a qual pretende cercar uma horta retangular, de dimens˜oes x e y. • Usando o comprimento da tela, exprima y como uma fun¸c˜ao de x. • Determine a fun¸c˜ao A(x) que fornece a ´area cercada em rela¸c˜ao a x. • Determine o valor de x que maximiza a ´area cercada e encontre a ´area m´axima da horta. • Esboce o gr´afico de A(x).
Solution
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Math Problem Analysis
Mathematical Concepts
Algebra
Quadratic Functions
Optimization
Formulas
Perimeter of a rectangle: P = 2x + 2y
Area of a rectangle: A = x * y
Derivative of a function to find critical points: A'(x) = 100 - 2x
Theorems
Optimization through derivative
Quadratic function properties
Suitable Grade Level
Grades 9-12