" 16."5x^(2)=9+x^(2)" Halo "

9x^(2)-16y^(2)

Add : 5x^(2) , - 9x^(2)

The function f(x)=(16+x^(2))/(9-x^(2)) is :

if 5x+9=0 is the directrix of the hyperbola 16x^(2)-9y^(2)=144 , then its corresponding focus is

If 5x +9 =0 is the directtrix of the hyperbola 16x^(2) -9y^(2)=144, then its corresponding focus is

If 5x + 9 = 0 is the directrix of the hyperbola 16x^(2)-9y^(2)=144 then its corresponding focus is

if 5x+9=0 is the directrix of the hyperbola 16x^(2)-9y^(2)=144, then its corresponding focus is

The eccentricity of the hyperbola 16x^(2)-9y^(2)=1 is The eccentricity of the hyperbola 16x^(2)-9y^(2)=1 is