If the slope of an asymptote of the hyperbola whose center is at the origin and focus is on the coordinate axis is 2 / 7, the eccentricity of the hypohyperbola can be calculated

If the slope of an asymptote of the hyperbola whose center is at the origin and focus is on the coordinate axis is 2 / 7, the eccentricity of the hypohyperbola can be calculated

The slope of asymptote is 2 / 7, that is, B / a = 2 / 7
b^2/a^2=4/49
(a^2+b^2)/a^2=(4+49)/49
c^2/a^2=53/49
e^2=c^2/a^2=53/49
E = root 53 / 7