The normal line to the surface x² + 2y² + ² = 25 at the point (1, -2, 4) is parallel to the vector O (1,4,-4) O (1,-4,4) O (2,8,-4) O (2,-8,4)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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The normal line to the surface \( x^2 + 2y^2 + z^2 = 25 \) at the point \( (1, -2, 4) \) is parallel to the vector

\[
\begin{array}{c}
\circ \langle 1, 4, -4 \rangle \\
\circ \langle 1, -4, 4 \rangle \\
\circ \langle 2, 8, -4 \rangle \\
\circ \langle 2, -8, 4 \rangle \\
\end{array}
\]
Transcribed Image Text:The normal line to the surface \( x^2 + 2y^2 + z^2 = 25 \) at the point \( (1, -2, 4) \) is parallel to the vector \[ \begin{array}{c} \circ \langle 1, 4, -4 \rangle \\ \circ \langle 1, -4, 4 \rangle \\ \circ \langle 2, 8, -4 \rangle \\ \circ \langle 2, -8, 4 \rangle \\ \end{array} \]
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