Example 5 - Let a = i + 2j, b = 2i + j. Is |a| = |b|? - Examples

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  1. Chapter 10 Class 12 Vector Algebra
  2. Serial order wise
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Example 5 Let = + 2 and = 2 + . Is = ? Are the vectors and equal? = + 2 = 2 + We have, = 1 + 2 + 0 and = 2 + 1 + 0 Magnitude of = 12+22+02 = 1+4+0 = 5 Magnitude of = 22+12+02 = 4+1+0 = 5 So, = Now we have to check if and equal = 1 + 2 + 0 & = 2 + 1 + 0 Comparing corresponding components, As 1 2 Thus, and are not equal since their corresponding components are distinct.

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