Let P(3,3) be a point on the hyperbola, x²/a² - y²/b² = 1. If the normal to it at P intersects the x-axis at (9,0) and e is its eccentricity, then the ordered pair (a², e²) is equal to:
Let P(3,3) be a point on the hyperbola, x²/a² - y²/b² = 1. If the normal to it at P intersects the x-axis at (9,0) and e is its eccentricity, then the ordered pair (a², e²) is equal to:
Since (3,3) lies on x²/a² - y²/b² = 1
9/a² - 9/b² = 1
Now, normal at (3,3) is y-3 = -a²/b² (x-3),
which passes through (9,0) ⇒ b² = 2a²
So, e² = 1 + b²/a² = 3
Also, a² = 9/2
(From (i) and (ii)
Thus, (a², e²) = (9/2, 3)
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Maths Ncert Solutions class 11th 2026
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