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[obm-l] algebra
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: [obm-l] algebra
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: "Daniel Pini" <
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Date
: Mon, 9 Jun 2003 22:09:45 -0300
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Sendo m e n as raízes da equação x²-10x+1=0, o valor da expressão 1/ m³ + 1/n² é?
a)970 b)950 c)920 d)900 e)870
Simplificando a expressão ( 1 + (x^4 -1)/2x² - x²/2)^1/2 para x pertencente a reais não nulos, obtem-se:
R; 1/2x²
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