Find the First Partial Derivatives of the Function

question 216

Multiple Choice

Find the first partial derivatives of the function. ​ ​

---

Definitions:

Pyroclastic Flow

A fast-moving current of hot gas and volcanic materials (ash, lava fragments) that flows down the sides of a volcano during an explosive eruption.

Lahar

A mudflow mostly composed of volcanic-derived materials and generally formed on the flank of a volcano.

Composite Volcanoes

Volcanoes constructed from multiple layers of lava flows, volcanic ash, and other volcanic debris, characterized by steep profiles and periodic explosive eruptions.

Lahars

Volcanic mudflows or debris flows that occur when volcanic materials become saturated with water and rapidly move down slopes.