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Mathematics for IGCSE & O level - Vectors (Section 5 - No. 10)
If vector a = [2,3], and vector b = [4,1], what is the vector 3a + 2b?
[14,11]
[14,9]
[11,14]
[11,9]
解释
3a + 2b = 3[2,3] + 2[4,1] = [6,9] + [8,2] = [14,11]
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