Question

If the straight line y = 2x + e is a tangent to the ellipse

$\frac{x^{2}}{8}$+ $\frac{y^{2}}{4}$= 1, then e will be equal to-

• A. ±4
• B. ±6
• C. ±1
• D. ± 8

Answer 1

Answer: (B)

±6

Answer 2

y = 2x + e .. (1)

$\frac{x^{2}}{8}$+ $\frac{y^{2}}{4}$= 1 …(2)

Ž Q c² = a²m² + b² Ž e² = 8(2)² + 4 Ž e = ?