JPJC Tutorial Question 1(c)

JPJC Tutorial Question 1(c)

15 marks
Tutorial

Find the equation of the following planes in both the scalar product form and Cartesian form:

  1. Plane passing through the point \((0,1,6)\) and parallel to the plane \(\mathbf{r}\cdot\mathrm{(}\mathbf{i}-\mathrm{2}\mathbf{j}\mathrm{)}\,\mathrm{=}\,\mathrm{3}\).[3]
  2. Plane containing the points \((0,1,1)\), \((2,1,0)\) and \((-2,0,3)\).[3]
  3. Plane passing through the point \((1,1,0)\) and perpendicular to the line
    \(\mathbf{r}=\mathbf{i}+3\mathbf{j}+\mathbf{k}+\alpha(5\mathbf{i}+3\mathbf{j}-2\mathbf{k}),\,\alpha \in \mathbb{R}\).[3]
  4. Plane containing the point \((1,0,-1)\) and the line \(2x-1=y+2,\,z=3.\)[3]
  5. Plane containing the line \(\mathbf{r}\,=\,3\mathbf{i}-2\mathbf{k}+\beta \mathbf{(i-j)},\,\,\beta \in \mathbb{R}\), and perpendicular to the plane \(2x-3y+6z=1\).[3]

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Answer:(a) \(\mathbf r\cdot\langle1,-2,0\rangle=-2\), \(x-2y=-2\) (b) \(\mathbf r\cdot\langle1,2,2\rangle=4\), \(x+2y+2z=4\) (c) \(\mathbf r\cdot\langle5,3,-2\rangle=8\), \(5x+3y-2z=8\) (d) \(\mathbf r\cdot\langle-8,4,1\rangle=-9\), \(-8x+4y+z=-9\) (e) \(\mathbf r\cdot\langle6,6,1\rangle=16\), \(6x+6y+z=16\)

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