
內積 基本概念
Authored by 仲連 柯
Mathematics
11th Grade

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
點積的性質中,兩個向量的點積等於零代表什麼?
這兩個向量是平行的
這兩個向量的長度相等
這兩個向量的夾角是銳角
這兩個向量是垂直的
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
計算向量 (3, 4) 和向量 (5, 2) 的點積。
23
13
26
10
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
點積的幾何意義是什麼?
面積
角度
投影
體積
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
向量 a = (2, 3) 和向量 b = (4, 1) 的點積是多少?
10
11
7
15
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
點積的性質中,點積的交換律是什麼?
a·b = a^2 + b^2
a·b = b·a
a·b = -b·a
a·b = ab
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
計算向量 (1, -2, 3) 和向量 (4, 5, 6) 的點積。
-7
20
8
11
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
點積的向量表示是什麼?
兩個向量相乘後相減的結果
兩個向量相減後相加的結果
兩個向量相加後相減的結果
兩個向量相乘後相加的結果
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