Slope of the common tangent to the ellipse `x^2/(a^2+b^2)+y^2/b^2=1,x^2/a^2+y^2/(a^2+b^2)=1` is

Length of common tangents to the hyperbolas x^2/a^2-y^2/b^2=1 and y^2/a^2-x^2/b^2=1 is

Length of common tangents to the hyperbolas x^2/a^2-y^2/b^2=1 and y^2/a^2-x^2/b^2=1 is

which one of the following is the common tangent to the ellipses,(x^(2))/(a^(2)+b^(2))+(y^(2))/(b^(2))=1 and (x^(2))/(a^(2))+(y^(2))/(a^(2)+b^(2))=1?

Find the slope of a common tangent to the ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 and a concentric circle of radius rdot

Find the slope of a common tangent to the ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 and a concentric circle of radius rdot

Find the slope of a common tangent to the ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 and a concentric circle of radius rdot

Find the slope of a common tangent to the ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 and a concentric circle of radius rdot

Find the slope of a common tangent to the ellipse (x^(2))/(a^(2))+(y^(2))/(b^(2))=1 and a concentric circle of radius r.

Find the slope of a common tangent to the ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 and a concentric circle of radius rdot