Questões Militares de Matemática
Foram encontradas 8.531 questões
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x2 − 6bx − (1 − b2)(y2 − 2by) + b4 + 8b2 − 1 = 0
determina uma hipérbole. Com respeito ao centro C desta hipérbole podemos afirmar:
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−π/2 < x − r ≤ x + r < π/2.
Sobre
tan(x − r),tan(x) e tan(x + r),
nesta ordem, podemos afirmar que:
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I. Se AB ≠ BA então ou A ou B não é inversível.
II. Se AB = 0 então BA = 0.
III. Se AT = −A2 e A é inversível então det(A) = −1.
É (são) verdadeira(s):
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![Imagem associada para resolução da questão](https://arquivos.qconcursos.com/images/provas/87144/b3177a1a5edcaed7ac25.png)
Assinale a alternativa correta: