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Question 71
Find a unit vector perpendicular to both 6i⃗−j⃗+k⃗6 \vec { i } - \vec { j } + \vec { k }6i−j+k and 8i→+k⃗\overrightarrow { 8 i } + \vec { k }8i+k .
A) −169i⃗−269j⃗+869k⃗- \frac { 1 } { \sqrt { 69 } } \vec { i } - \frac { 2 } { \sqrt { 69 } } \vec { j } + \frac { 8 } { \sqrt { 69 } } \vec { k }−691i−692j+698k B) −169i⃗+269j⃗+869k⃗- \frac { 1 } { \sqrt { 69 } } \vec { i } + \frac { 2 } { \sqrt { 69 } } \vec { j } + \frac { 8 } { \sqrt { 69 } } \vec { k }−691i+692j+698k C) −169i⃗+269j⃗−869k⃗- \frac { 1 } { \sqrt { 69 } } \vec { i } + \frac { 2 } { \sqrt { 69 } } \vec { j } - \frac { 8 } { \sqrt { 69 } } \vec { k }−691i+692j−698k D) −i⃗+2j⃗+8k⃗- \vec { i } + 2 \vec { j } + 8 \vec { k }−i+2j+8k E) 169i⃗+269j⃗+869k⃗\frac { 1 } { \sqrt { 69 } } \vec { i } + \frac { 2 } { \sqrt { 69 } } \vec { j } + \frac { 8 } { \sqrt { 69 } } \vec { k }691i+692j+698k
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Q67: If Q68: Suppose that fx(2, 1)= 2.2, fx(2.5,Q69: If Q70: The table below gives values ofQ72: Consider the function Q73: Find the following partial derivative: HP(2,Q74: The table below gives values ofQ75: If fx(0, 0)exists and fy(0, 0)exists, thenQ76: Consider the level curves shown for
Q68: Suppose that fx(2, 1)= 2.2, fx(2.5,
Q69: If Q70: The table below gives values ofQ72: Consider the function Q73: Find the following partial derivative: HP(2,Q74: The table below gives values ofQ75: If fx(0, 0)exists and fy(0, 0)exists, thenQ76: Consider the level curves shown for
Q70: The table below gives values of
Q72: Consider the function
Q73: Find the following partial derivative: HP(2,
Q74: The table below gives values of
Q75: If fx(0, 0)exists and fy(0, 0)exists, then
Q76: Consider the level curves shown for
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