Editor
Equation of tangent to hyperbola $\frac{x^{2}}{2} - \frac{y^{2}}{2}=1$ at point $(2,1)$ is
Difficulty: Easy
A: 
$2y+x-3=0$
B: 
$2y-x+3=0$
C: 
$2x+y+3=0$
D: 
$2x-y-3=0$
Sponsored Ads