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20230502

Authored by Benjamin (wreckingbald)

Mathematics

6th - 8th Grade

Used 1+ times

20230502
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29 questions

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1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

今天的授課老師是誰?

呂紹剩

呂紹嵊

呂邵剩

以上皆是

2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

承上題,他所就讀的學校/系所是?

台灣大學/財經學系

國立台灣大學/財務經濟學系

國立台灣大學/財務金融學系

國立台灣大學/財管經濟系

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

135\frac{13}{5}

125\frac{12}{5}

512\frac{5}{12}

512 or −512\frac{5}{12}\ or\ -\frac{5}{12}

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

12/12

12/6

6/12

6/6

5.

FILL IN THE BLANKS QUESTION

1 min • 1 pt

Media Image



(a)  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

已知 ABDCEF正六邊形, AB→\overrightarrow{AB} = a, AC→\overrightarrow{AC} = b,試用a、b表示 AD→\overrightarrow{AD}

2b

a + 0.5b

2(b-0.5a)

2a+b

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

有關向量內積的敘述,下列何者錯誤?

a→⋅b→ = b→ ⋅a→\overrightarrow{a}\cdot\overrightarrow{b}\ =\ \overrightarrow{b}\ \cdot\overrightarrow{a}

a→⋅a→ = ∣a→∣2\overrightarrow{a}\cdot\overrightarrow{a}\ =\ \left|\overrightarrow{a}\right|^2

if a⋅b = 0, then  a⊥bif\ a\cdot b\ =\ 0,\ then\ \ a\perp b

a⋅b = ∣a∣∣b∣sin⁡θa\cdot b\ =\ \left|a\right|\left|b\right|\sin\theta

all of the above are correct

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