焦点 ((x-5)^2)/1-((y-4)^2)/1 =1

解答

焦点

\frac{( x - 5 ) ^{2}}{1} - \frac{( y - 4 ) ^{2}}{1} = 1

(5 + 2, 4), (5 - 2, 4)

求解步骤

(h + c, k), (h - c, k)

计算双曲线性质

\frac{( x - 5 ) ^{2}}{1} - \frac{( y - 4 ) ^{2}}{1} = 1 :

左右开口双曲线，

(h, k) = (5, 4), a = 1, b = 1

(5 + c, 4), (5 - c, 4)

计算

c :

c = 1^{2} + 1^{2} : 2

(5 + 2, 4), (5 - 2, 4)