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Find the value of lambda for which the t...

Find the value of `lambda` for which the three points with position vectors ` 2hat(i) + 3hat(j) - 4hat(k), -hat(i) + hat(j) + 2hat(k)` and `4hat(i) + 5hat(j) + lambda hat(k)` are coplanar.

Text Solution

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The correct Answer is:
`lambda = (-146)/(17)`
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