### All GRE Subject Test: Math Resources

## Example Questions

### Example Question #1 : Functions Of More Than Two Variables

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 #2 : Functions Of More Than Two Variables

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 #3 : Functions Of More Than Two Variables

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.

Suresh

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Portland State University, Bachelors, Economics. Portland State University, Masters, Environmental and Resource Management.