vectors-m

Question: The unit normal vector to the line joining $\mathbf{i}-\mathbf{j}$ and $2\,\mathbf{i}+3\,\mathbf{j}$ and pointing towards the origin is

1) $\frac{4\,\mathbf{i}-\mathbf{j}}{\sqrt{17}}$

2) $\frac{-4\,\mathbf{i}+\mathbf{j}}{\sqrt{17}}$

3) $\frac{2\,\mathbf{i}-3\,\mathbf{j}}{\sqrt{13}}$

4) $\frac{-\,2\,\mathbf{i}+3\,\mathbf{j}}{\sqrt{13}}$

Solution:

Explanation: No Explanation

Scalar Product Dot Product

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