vectors-m

Question: If $|\mathbf{a}|\,=3,\,\,|\mathbf{b}|\,=4$ then a value of ? for which $\mathbf{a}+\lambda \mathbf{b}$ is perpendicular to $\mathbf{a}-\lambda \mathbf{b}$ is

1) $\mathbf{a}=2\,\mathbf{i}+2\,\mathbf{j}+3\,\mathbf{k},\,\,\mathbf{b}=-\mathbf{i}+2\,\mathbf{j}+\mathbf{k}$

2) $\frac{3}{4}$

3) $\frac{3}{2}$

4) $\frac{4}{3}$

Solution:

Explanation: No Explanation

Scalar Product Dot Product

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