距离 (5,-9),(-4,-1)

解答

距离

(5, - 9), (- 4, - 1)

145

求解步骤

计算

(x_{1}, y_{1}), (x_{2}, y_{2})

之间的距离:

(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2}

(5, - 9)

与

(- 4, - 1)

之间的距离是

= (- 4 - 5)^{2} + (- 1 - (- 9))^{2}

化简

= 145

y = \frac{1}{3} x + 2, (3, 3)

(8, 4), (20, 10)

f (x) = (1 + x)^{\frac{4}{x}}, at x = 1

(6, - \frac{7 π}{6})

f (x) = e^{x} ln (x)