If a = 4j and b = 3j + 4k , then the vector form of the component of a along b is
The logic is straightforward: using formula we get 1225(3 j + 4 k). Calculation gives this directly, check steps: apply rule, substitute values, simplify to get 1225(3 j + 4 k).
Ref: NCERT Mathematics Class XII — Vectors and 3D Geometry