MCQ
$\frac{{{(-1+i\sqrt{3})}^{15}}}{{{(1-i)}^{20}}}+\frac{{{(-1-i\sqrt{3})}^{15}}}{{{(1+i)}^{20}}}$ is equal to [AMU 2000]
- ✓- 64
- B- 32
- C- 16
- D$\frac{1}{16}$
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Equation of the hyperbola with eccentricty $\frac{3}{2}$ and foci at $(\pm2,0)$ is:
$\frac{\text{x}^2}{4}-\frac{\text{y}^2}{5}=\frac{4}{9}$
$\frac{\text{x}^2}{9}-\frac{\text{y}^2}{9}=\frac{4}{9}$
$\frac{\text{x}^2}{4}-\frac{\text{y}^2}{9}=1$
none of these.