$\"\"$

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The vectors $\"\"$ and condition is $\"\"$ .

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Find $\"\"$ .

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The scalar multiple of $\"\"$ and u is the vector of $\"\"$ is $\"\"$ .

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Find $\"\"$ .

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The scalar multiple of $\"\"$ and w is the vector of $\"\"$ is $\"\"$ .

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$\"\"$

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Find $\"\"$ and $\"\"$ .

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condition is $\"\"$ .

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Substitute $\"\"$ , $\"\"$ and $\"\"$ in the above condition.

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$\"\"$

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Compare corresponding unit vectors.

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$\"\"$ equation (1)

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$\"\"$ equation (2)

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Add equation (1) and equation (2).

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$\"\"$

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Substitute a = 1 in the equation (1).

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$\"\"$

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$\"\"$

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$\"\"$ .