Question 1303c

Vectors II: Lines and Planes
Equation of a Plane from III

Question

The line l{l} and the plane p1{p_1} are given by
l:r=(441)+λ(112),  λR,p1:r(181)=29.\begin{align*} &l: \mathbf{r} = \begin{pmatrix} 4 \\ 4 \\ 1 \end{pmatrix} + \lambda \begin{pmatrix} 1 \\ - 1 \\ 2 \end{pmatrix}, \; \lambda \in \mathbb{R}, \\ &p_1: \mathbf{r} \cdot \begin{pmatrix} 1 \\ - 8 \\ - 1 \end{pmatrix} = - 29. \end{align*}
Find the equation of the plane p{p} that contains l1{l_1} and is perpendicular to p1.{p_1.}

Attempt

p:{p: }
r{\mathbf{r}\cdot}
({\Biggl(}
){\Biggr)}
={=}

Answer

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