Find All the Saddle Points of the Function $f ( x , y ) = x \sin \frac { y } { 2 }$

question 31

Multiple Choice

Find all the saddle points of the function. $f ( x , y ) = x \sin \frac { y } { 2 }$

• A) \(( 3 \pi n , 0 )\)
• B) \(\left( 0 , \frac { \pi n } { 2 } \right)\)
• C) \(( 2 \pi n , 1 )\)
• D) \[( 0,2 \pi n )\]
• E) \(\left( \frac { 2 n } { \pi } , 0 \right)\)

---

Definitions:

Mastery

The comprehensive knowledge or skilled proficiency gained in a particular subject or activity.

Subject

The person or thing that is being discussed, described, or dealt with, especially in a sentence's grammatical construction.

Test-Retest Procedures

A method of determining the reliability of a test by administering it to the same group of individuals at two different points in time.

Reliability

The degree to which an assessment tool produces stable and consistent results over time.