Calculus 3 : Vector Addition

Study concepts, example questions & explanations for Calculus 3

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Example Questions

Example Question #51 : Vector Addition

Find the sum of the vectors \displaystyle \left \langle 3x,y,-2z\right \rangle and \displaystyle \left \langle 6x,2y,0\right \rangle

Possible Answers:

\displaystyle \left \langle 18x,2y^2,0\right \rangle

\displaystyle \left \langle -3x,-y,2z\right \rangle

\displaystyle \left \langle 3x,y,z\right \rangle

\displaystyle \left \langle 9x,3y,-2z\right \rangle

Correct answer:

\displaystyle \left \langle 9x,3y,-2z\right \rangle

Explanation:

To find the sum between the vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle and \displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, we use the following formula:

\displaystyle a+b=\left \langle x_1+x_2,y_1+y_2,z_1+z_2\right \rangle

Using the vectors from the problem statement, we get

\displaystyle \left \langle 3x+6x,y+2y,-2z+0\right \rangle=\left \langle 9x,3y,-2z\right \rangle

Example Question #52 : Vector Addition

Find the sum of the vectors \displaystyle \left \langle -4x,5y,z\right \rangle and \displaystyle \left \langle 6,7y,1\right \rangle

Possible Answers:

\displaystyle \left \langle 4-3x,10,7z\right \rangle

\displaystyle \left \langle -4x+6,12y,z+1\right \rangle

\displaystyle \left \langle-24x,35y,z \right \rangle

\displaystyle \left \langle 17x,12y,2z\right \rangle

Correct answer:

\displaystyle \left \langle -4x+6,12y,z+1\right \rangle

Explanation:

To find the sum between the vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle and \displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, we use the following formula:

\displaystyle a+b=\left \langle x_1+x_2,y_1+y_2,z_1+z_2\right \rangle

Using the vectors from the problem statement, we get

\displaystyle \left \langle -4x+6,5y+7y,z+1\right \rangle=\left \langle -4x+6,12y,z+1\right \rangle

Example Question #53 : Vector Addition

Find the sum of the vectors \displaystyle \left \langle 3,1,2z\right \rangle and \displaystyle \left \langle 9,5,4z\right \rangle

Possible Answers:

\displaystyle \left \langle 12,5,6z\right \rangle

\displaystyle \left \langle 10,7,6z\right \rangle

\displaystyle \left \langle 12,6,6z\right \rangle

\displaystyle \left \langle 12,4,z\right \rangle

Correct answer:

\displaystyle \left \langle 12,6,6z\right \rangle

Explanation:

To find the sum between vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle and \displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, we use the following formula:

\displaystyle a+b=\left \langle(x_1+x_2),(y_1+y_2),(z_1+z_2) \right \rangle

Using the vectors from the problem statement, we get

\displaystyle \left \langle (3+9),(1+5),(2z+4z) \right \rangle=\left \langle 12,6,6z\right \rangle

Example Question #2261 : Calculus 3

Find the sum of the vectors \displaystyle \left \langle -3,-9,1\right \rangle and \displaystyle \left \langle 15,10,4\right \rangle

Possible Answers:

\displaystyle \left \langle 12,3,7\right \rangle

\displaystyle \left \langle 1,4,5\right \rangle

\displaystyle \left \langle 12,1,5\right \rangle

\displaystyle \left \langle 11,1,5\right \rangle

Correct answer:

\displaystyle \left \langle 12,1,5\right \rangle

Explanation:

To find the sum between vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle and \displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, we use the following formula:

\displaystyle a+b=\left \langle(x_1+x_2),(y_1+y_2),(z_1+z_2) \right \rangle

Using the vectors from the problem statement, we get

\displaystyle \left \langle (-3+15),(-9+10),(1+4) \right \rangle=\left \langle 12,1,5\right \rangle

Example Question #2262 : Calculus 3

Find the sum of the vectors \displaystyle \left \langle -9,-5,3\right \rangle and \displaystyle \left \langle 2,0,-8\right \rangle

Possible Answers:

\displaystyle \left \langle 6,-5,-5\right \rangle

\displaystyle \left \langle -7,5,-5\right \rangle

\displaystyle \left \langle -7,-5,7\right \rangle

\displaystyle \left \langle -7,-5,-5\right \rangle

Correct answer:

\displaystyle \left \langle -7,-5,-5\right \rangle

Explanation:

To find the sum of two vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle and \displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, we use the following formula:

\displaystyle a+b=\left \langle (x_1+x_2),(y_1+y_2),(z_1+z_2) \right \rangle

Applying to the vectors from the problem statement, we get

\displaystyle \left \langle -9+2,-5+0,3-8\right \rangle=\left \langle -7,-5,-5\right \rangle

Example Question #56 : Vector Addition

Find the sum of the vectors \displaystyle \left \langle -10,-13,15\right \rangle and \displaystyle \left \langle 5,2,-9\right \rangle

Possible Answers:

\displaystyle \left \langle -5,-11,4\right \rangle

\displaystyle \left \langle 5,-11,6\right \rangle

\displaystyle \left \langle -5,-1,6\right \rangle

\displaystyle \left \langle -5,-11,6\right \rangle

Correct answer:

\displaystyle \left \langle -5,-11,6\right \rangle

Explanation:

To find the sum of two vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle and \displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, we use the following formula:

\displaystyle a+b=\left \langle (x_1+x_2),(y_1+y_2),(z_1+z_2) \right \rangle

Applying to the vectors from the problem statement, we get

\displaystyle \left \langle -10+5,-13+2,15-9\right \rangle=\left \langle -5,-11,6\right \rangle

Example Question #2261 : Calculus 3

Find the sum of the vectors \displaystyle \left \langle 3,-2,1\right \rangle\displaystyle \left \langle 9,0,2\right \rangle, and \displaystyle \left \langle 1,0,1\right \rangle

Possible Answers:

\displaystyle \left \langle 12,-2,4\right \rangle

\displaystyle \left \langle 13,-2,4\right \rangle

\displaystyle \left \langle 13,-2,6\right \rangle

\displaystyle \left \langle 13,-4,4\right \rangle

Correct answer:

\displaystyle \left \langle 13,-2,4\right \rangle

Explanation:

To find the sum of three vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle\displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, and \displaystyle c=\left \langle x_3,y_3,z_3\right \rangle, we use the following formula:

\displaystyle a+b+c=\left \langle (x_1+x_2+x_3),(y_1+y_2+y_3),(z_1+z_2+z_3) \right \rangle

Using the two vectors from the problem statement and applying, we get

\displaystyle \left \langle (3+9+1),(-2+0+0),(1+2+1) \right \rangle=\left \langle 13,-2,4\right \rangle

Example Question #58 : Vector Addition

Find the sum of the vectors \displaystyle \left \langle 3,-8,-13\right \rangle and \displaystyle \left \langle 4,0,7\right \rangle

Possible Answers:

\displaystyle \left \langle 3,5,-8\right \rangle

\displaystyle \left \langle 7,6,-8\right \rangle

\displaystyle \left \langle 7,8,-8\right \rangle

\displaystyle \left \langle 7,-8,-6\right \rangle

Correct answer:

\displaystyle \left \langle 7,-8,-6\right \rangle

Explanation:

To find the sum of two vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle and \displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, we use the following formula:

\displaystyle a+b=\left \langle (x_1+x_2),(y_1+y_2),(z_1+z_2) \right \rangle

Using the two vectors from the problem statement and applying, we get

\displaystyle \left \langle (3+4),(-8+0),(-13+7) \right \rangle=\left \langle 7,-8,-6\right \rangle

Example Question #59 : Vector Addition

Find the sum of the vectors \displaystyle \left \langle 5,-18,3\right \rangle and \displaystyle \left \langle 3,-6,5\right \rangle

Possible Answers:

\displaystyle \left \langle 8,-24,8\right \rangle

\displaystyle \left \langle 8,-14,8\right \rangle

\displaystyle \left \langle 6,-24,8\right \rangle

\displaystyle \left \langle 8,10,20\right \rangle

Correct answer:

\displaystyle \left \langle 8,-24,8\right \rangle

Explanation:

To find the sum of two vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle and \displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, we apply the following formula:
\displaystyle a+b=\left \langle x_1+x_2,y_1+y_2,z_1+z_2\right \rangle

Using the vectors from the problem statement, we get 

\displaystyle \left \langle 5+3,-18-6,3+5\right \rangle=\left \langle 8,-24,8\right \rangle

 

Example Question #60 : Vector Addition

Find the sum of the vectors \displaystyle \left \langle 7,-10,4\right \rangle and \displaystyle \left \langle 2,-6,9\right \rangle

Possible Answers:

\displaystyle \left \langle 9,-16,11\right \rangle

\displaystyle \left \langle 9,-16,13\right \rangle

\displaystyle \left \langle 9,-9,13\right \rangle

\displaystyle \left \langle 8,-16,13\right \rangle

Correct answer:

\displaystyle \left \langle 9,-16,13\right \rangle

Explanation:

To find the sum of two vectors \displaystyle a=\left \langle x_1,y_1,z_1\right \rangle and \displaystyle b=\left \langle x_2,y_2,z_2\right \rangle, we apply the following formula:
\displaystyle a+b=\left \langle x_1+x_2,y_1+y_2,z_1+z_2\right \rangle

Using the vectors from the problem statement, we get 

\displaystyle \left \langle 7+2,-10-6,4+9\right \rangle=\left \langle 9,-16,13\right \rangle

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