CONIC SECTIONS MATHS - CONIC SECTIONS

• A
  $1$
• ✓
  $\frac{3}{4}$
• C
  $0$
• D
  $-\frac{3}{4}$

Answer: B.

• ✓
  $\frac{\sqrt{5}-1}{2}$
• B
  $\frac{\sqrt{5}+1}{2}$
• C
  $\frac{\sqrt{5}-1}{4}$
• D
  $\text{none of these}$

Answer: A.

• A
  $x^2+y^2+6 x-4 y=3$
• ✓
  $x^2+y^2-6 x+4 y=3$
• C
  $x^2+y^2-3 x+2 y=-3$
• D
  $x^2+y^2+3 x-2 y=-3$

Answer: B.

• A
  $\frac{\text{x}^2}{5}+\frac{\text{y}^2}{9}=1$
• ✓
  $\frac{\text{x}^2}{25}+\frac{\text{y}^2}{9}=1$
• C
  $\frac{\text{x}^2}{9}+\frac{\text{y}^2}{5}=1$
• D
  $\frac{\text{x}^2}{9}+\frac{\text{y}^2}{25}=1$

Answer: B.

• A
  $x^2+y^2-6 x-6 y+9=0$
• ✓
  $4\left(x^2+y^2-x-y\right)+1=0$
• C
  $4\left(x^2+y^2+x+y\right)+1=0$
• D
  None of these

Answer: B.