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Vestibular Comentado - UVA/2008.1 03

Vestibular Comentado - UVA/2008.1 03

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2Portanto, o polinômio P(x) é definido por P(x) = x – kx. Na divisão de P(x) por x – 1, o restovale:2P(x) = x – kx x – 1 = 02P(1) = 1 – k.1 x = 1P(1) = 1 – kLogo o resto é igual a 1 – kResposta correta: “C”<strong>Vestibular</strong> <strong>Comentado</strong> - <strong>UVA</strong>/<strong>2008.1</strong>Conhecimentos Gerais(x –b)34. Na figura, temos o esboço do gráfico da função definida por y log (a b). O valor de a+bé:YA. 42B. 2C. 3D. 5CLF – COMENTA:Assunto: Logaritmosa3aXAnalisando o gráfico temos os pontos: (a, 0) e (3a, 2)(a,0)(a – b) 1(a – b) 12(a –b)log( a= b) 022a – 2ab b 12(3a,2)log(a b) 2(a b) 3a – b2(3a –b)2a 2ab b 3a – b2ab 2ab13a – b222a b 2ab 14ab13a – bComo a – b3a 2Logo: a+b =211e b24ab 1 2a (a– b)4ab 1 2a 14ab 2a1b 2Resposta correta: “B”23

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