Math Problem Statement
Donada la funció f ( x ) = x 4 - x 3 - 7 x 2 + m x + 6 a) Calculeu el valor de m per tal que f(x) passi pel punt (2, 7). b) Per m = 1, calculeu els punts de tall i el signe de f(x).
Solution
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Math Problem Analysis
Mathematical Concepts
Polynomial Functions
Root Finding
Sign Analysis
Formulas
f(x) = x^4 - x^3 - 7x^2 + mx + 6
f(2) = 2^4 - 2^3 - 7 * 2^2 + m * 2 + 6 = 7
Theorems
Solving polynomial equations
Root-finding for quartic polynomials
Sign analysis for polynomial intervals
Suitable Grade Level
Grades 10-12
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