解答

(30) (06)

0

求解步骤

(30) (06)

计算两个向量的标量积:

(x_{1}, \dots, x_{n}) \cdot (y, \dots, y_{n}) = i = 1 \sum n x_{i} y_{i}

= 3 \cdot 0 + 0 \cdot 6

化简

3 \cdot 0 + 0 \cdot 6 : 0

= 0

流行的例子

r an g e y = - x + 3

a sy m pt o t es f (x) = 2 (3^{x})

s l o p e in t erce pt y = \frac{1}{2} x + 3

p a r i t y f (x) = sin (x + \frac{π}{2})

in t erce pt s - 3 x^{2} - 18 x - 25