For which of the hyperbolas, can we have more than one
P pair of pe... VIDEO
For which of the hyperbolas, can we have more than one
P pair of perpendicular tangents?
(1) \( \frac{x^{2}}{4}-\frac{y^{2}}{9}=1 \)
(2) \( \frac{x^{2}}{4}-\frac{y^{2}}{9}=-1 \)
(3) \( x^{2}-y^{2}=4 \)
(4) \( x y=44 \)
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