extreme x^2-100x

解答

极值点

x^{2} - 100 x

极小值 (50, - 2500)

求解步骤

f^{'} (x) = 2 x - 100

Find intervals:

递减

: - \infty < x < 50,

递增

: 50 < x < \infty

将

x = 50

代入

x^{2} - 100 x : - 2500

极小值 (50, - 2500)

e x t re m e f (x) = 2 - x^{2} - x y - y^{2}

e x t re m e f (x) = - 2 x^{4} + 20 x^{2} - 18

e x t re m e f (x) = x + \frac{9}{x} + 4, 1 \leq x \leq 18

e x t re m e f (x) = - 2 x + 3 ln (2 x)

e x t re m e f (x, y) = 2 - x + y