双曲线9x^2-16y^2=1焦距为?

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/24 15:51:32
双曲线9x^2-16y^2=1焦距为?双曲线9x^2-16y^2=1焦距为?双曲线9x^2-16y^2=1焦距为?a^2=1/9b^2=1/16a=1/3b=1/4c^2=1/9+1/16=25/14

双曲线9x^2-16y^2=1焦距为?
双曲线9x^2-16y^2=1焦距为?

双曲线9x^2-16y^2=1焦距为?
a^2=1/9
b^2=1/16
a=1/3
b=1/4
c^2=1/9+1/16=25/144
c=5/12
焦距=2c=10/12=5/6