Ahmed finds the magnitude of the vector $$\(\left(\begin{array}{r}2 \\ -3\end{array}\right)\)$$. From this list, put a ring around the correct calculation. $$\[ \sqrt{2^{2}+-3^{2}} \quad 2^{2}-3^{2} \quad \sqrt{2^{2}-3^{2}} \quad 2^{2}+(-3)^{2} \quad \sqrt{2^{2}+(-3)^{2}} \]$$
Exam No:0580_w20_qp_21 Year:2020 Question No:9(b)
Answer:
\(\sqrt{2^{2}+(-3)^{2}}\)
Knowledge points:
E7.3.1 Calculate the magnitude of a vector
E7.3.2 Represent vectors by directed line segments. (In their answers to questions, candidates are expected to indicate a in some definite way
E7.3.3 Use the sum and difference of two vectors to express given vectors in terms of two coplanar vectors.
E7.3.4 Use position vectors.
Solution:
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