发布网友 发布时间:2024-10-22 06:36
共1个回答
热心网友 时间:2024-11-02 09:14
16x^2-9y^2=144 ,化成x^2/9-y^2/16=1,
c=√(a^2+b^2)=5,
焦点坐标F1(-5,0),F2(5,0),
离心率e=c/a=5/3,
渐近线方程:y=±4x/3
16x^2-9y^2=-144,化成y^2/16-x^2/9=1,
c=5,焦点坐标F1(0,-5),F2(0,5),
离心率e=c/b=5/4,
渐近线方程:y=±4x/3.
热心网友 时间:2024-11-02 09:10
16x^2-9y^2=144 ,化成x^2/9-y^2/16=1,
c=√(a^2+b^2)=5,
焦点坐标F1(-5,0),F2(5,0),
离心率e=c/a=5/3,
渐近线方程:y=±4x/3
16x^2-9y^2=-144,化成y^2/16-x^2/9=1,
c=5,焦点坐标F1(0,-5),F2(0,5),
离心率e=c/b=5/4,
渐近线方程:y=±4x/3.
热心网友 时间:2024-11-02 09:11
16x^2-9y^2=144 ,化成x^2/9-y^2/16=1,
c=√(a^2+b^2)=5,
焦点坐标F1(-5,0),F2(5,0),
离心率e=c/a=5/3,
渐近线方程:y=±4x/3
16x^2-9y^2=-144,化成y^2/16-x^2/9=1,
c=5,焦点坐标F1(0,-5),F2(0,5),
离心率e=c/b=5/4,
渐近线方程:y=±4x/3.