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Find Equations for the Tangent Plane and the Normal Line xy+yz+xz=38x y + y z + x z = 38

Question 70

Multiple Choice

Find equations for the tangent plane and the normal line to the surface with equation xy+yz+xz=38x y + y z + x z = 38 at the point P(2,4,5) P ( 2,4,5 )


A) 6x+7y+9z=766 x + 7 y + 9 z = 76 , x26=y47=z59\frac { x - 2 } { 6 } = \frac { y - 4 } { 7 } = \frac { z - 5 } { 9 }
B) 9x+7y+6z=769 x + 7 y + 6 z = 76 , x29=y47=z56\frac { x - 2 } { 9 } = \frac { y - 4 } { 7 } = \frac { z - 5 } { 6 }
C) 2x+4y+5z=762 x + 4 y + 5 z = 76 , x62=y74=z95\frac { x - 6 } { 2 } = \frac { y - 7 } { 4 } = \frac { z - 9 } { 5 }
D) 2x+4y+5z=762 x + 4 y + 5 z = 76 , x92=y74=z65\frac { x - 9 } { 2 } = \frac { y - 7 } { 4 } = \frac { z - 6 } { 5 }

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