GRE Subject Test: Math : Functions of More Than Two Variables

Study concepts, example questions & explanations for GRE Subject Test: Math

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Example Questions

Example Question #1 : Partial Differentiation

Solve for :  

 

Possible Answers:

Correct answer:

Explanation:

To solve for the partial derivative, let all other variables be constants besides the variable that is derived with respect to.

In , the terms  are constants.

Derive as accordingly by the differentiation rules.

 

 

Example Question #1 : Partial Differentiation

Suppose the function .  Solve for .

Possible Answers:

Correct answer:

Explanation:

Identify all the constants in function .

Since we are solving for the partial differentiation of variable , all the other variables are constants.  Solve each term by differentiation rules.

Example Question #2 : Partial Differentiation

Suppose the function .  Solve for .

Possible Answers:

Correct answer:

Explanation:

Identify all the constants in function .

Since we are solving for the partial differentiation of variable , all the other variables are constants.  Solve each term by differentiation rules.

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