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Clearnote
Q&A
Senior High
Physics
D選項是怎麼算出來10的?
Physics
Senior High
6 monthsago
蘊仔~
D選項是怎麼算出來10的?
41+3Ĵ 又數對(a,b)平常當作是點坐標,但是在向量裡,它作為一種同時表達量值 DE 與方向的東西,向量也用在物理。若=4+3j、B=3i-j,則下列敘述哪些 正確?(多選) (A) A + B = 7i+j (B) A-B=1+7j (C)|Â+B|=4/5 (D)Ã|+|B|=10 (E)A-B=5√2. 7î - 1Ĵ > 7i+lŷĵ 1 j 7 3₁+4} 27 (D) 向量 î A = 4 ^ +3 ĵ, B = 3 ^ +4 ĵ
向量
Answers
追夢
6 monthsago
過程在圖片喔
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