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Viluxent Set 1 Paper 2 · Q4

Paper 2Logic & proofAlgebra

Let bb and cc be real numbers with c≠0c\ne0.

PP: The equation x2+bx+c=0x^2+bx+c=0 has two distinct positive real roots.

QQ: The equation cx2+bx+1=0cx^2+bx+1=0 has two distinct positive real roots.

Which one of the following is true?

APP is necessary but not sufficient for QQ
BPP is sufficient but not necessary for QQ
CPP is neither necessary nor sufficient for QQ
DPP is necessary and sufficient for QQ

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