Square gain
(a^2+b^2)/a^2=5/4
4a^2+4b^2=5a^2
4b^2=a^2
So the curve equation can be set.
X 2/4-y 2 = a 2 or
y^2-x^2/4=a^2
Substitute (3, root number 2) respectively.
a^2=9/4-3=-3/4
a^2=3-9/4=3/4
So the equation is
x^2/4-y^2=-3/4
x^2/4-y^2=3/4
That is 4y 2-x 2 = 3.
Or x 2-4y 2 = 3.
Tangent line passing through (x0, y0) x 2+y 2 = r 2
x0*x+y0*y=r^2
(1) What vocational schools are there in Yubei, Chongqing?
Hello Chongqing Yubei Shida Vocational Training School Chongqing Yubei Li