Vectors
Akopọ
A delivery drone needs more than a distance to reach its target: it needs a direction too. Fly 4 km the wrong way and you are further from the parcel than when you started. Vectors are the tool mathematics uses to carry size and direction together, and they turn awkward geometry problems, where a diagram only gets you so far, into clean algebra.
This topic builds vector notation and column vectors from the ground up, covers addition, subtraction, scalar multiplication and magnitude, and finishes with the technique examiners favour most: using vectors to prove that lines are parallel, that points are collinear, and that several lines meet at a single point.
Awọn Afojusun
- Understand scalar and vector quantities in two dimensions
- Understand and use vector notation including column vectors
- Represent a vector by a directed line segment
- Understand and use parallel vectors, unit vectors and position vectors
- Find the sum and difference of two vectors
- Calculate the modulus (magnitude) of a vector
- Multiply a vector by a scalar
- Find the resultant of two or more vectors
- Apply vector methods to simple geometrical problems including collinearity, parallel lines and concurrency
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Oriire fun ipari ẹkọ lori Vectors. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
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- Which of these is a vector quantity? A) Mass B) Temperature C) Velocity D) Area Answer: C
- What is the magnitude of the vector (8, -6)? A) 2 B) 10 C) 14 D) 100 Answer: B
- If a = (5, -2) and b = (-3, 6), what is a - b? A) (2, 4) B) (8, -8) C) (-8, 8) D) (2, -4) Answer: B
- Multiplying a vector by -3 will: A) triple its magnitude and keep the same direction B) triple its magnitude and reverse its direction C) divide its magnitude by 3 and reverse its direction D) keep the magnitude the same and reverse its direction Answer: B
- P, Q and R have position vectors such that PQ = 2(PR). What can you conclude? A) P, Q and R are collinear B) PQ is perpendicular to PR C) Q is the midpoint of PR D) Nothing can be concluded Answer: A
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Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Vectors
View vectors geometrically.
"Algebra and Trigonometry: Vectors" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/algebra-and-trigonometry/pages/10-8-vectors. Access for free at https://openstax.org/books/algebra-and-trigonometry/pages/1-introduction
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