Given that q2-pr 0- then the value of p q px-qy q r qx-ry px-qy qx-ry 0 is

The correct option is A negative Δ = p amp; q amp; px+qy q amp; r amp; qx+ry px+qy amp; qx+ry amp; 0 Applying R _ 3 → R ...

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Question

Given that $q^{2} - p r < 0, p > 0$ , then the value of $∣ ∣ ∣ ∣ \begin{matrix} p & q & p x + q y q & r & q x + r y p x + q y & q x + r y & 0 \end{matrix} ∣ ∣ ∣ ∣$ is

zero

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positive

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negative

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q^{2} + p r

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q^{2} - p r < 0, p > 0

∣ ∣ ∣ ∣ \begin{matrix} p & q & p x + q y q & r & q x + r y p x + q y & q x + r y & 0 \end{matrix} ∣ ∣ ∣ ∣

x^{3} + 3 p x^{2} + 3 q x + r

x^{2} + 2 p x + q

4 (p^{2} - q) (q^{2} - p r) - (p q - r)^{2} = 0

p^{2} - q = 0, q^{2} - p r = 0

p^{2} x^{2} + (p^{2} - q^{2}) x - q^{2} = 0, p \neq 0

G . P

p, q, r

q^{2} = p r

Three lines $p x + q y + r = 0, q x + r y + p = 0$ and $r x + p y + q = 0$ are concurrent, if

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