Use the Limit Definition of the Partial Derivative to Compute $\text { Find } \frac { \partial f } { \partial y } \text { at the point } ( - 10,9 ) \text { : } f ( x , y ) = 5 x ^ { 2 } + 7 x y + 7 y ^ { 2 }$

question 72

Essay

Use the limit definition of the partial derivative to compute the indicated partial derivative of the function at the specified point.
- $\text { Find } \frac { \partial f } { \partial y } \text { at the point } ( - 10,9 ) \text { : } f ( x , y ) = 5 x ^ { 2 } + 7 x y + 7 y ^ { 2 }$

---

Definitions:

Equivalent Units

A concept used in process costing that converts work-in-process inventory to a number of fully finished units.

Process Costing

A costing method used in manufacturing where costs are assigned to batches or production runs, typically for homogeneous products.

Cost of Goods Completed

This term refers to the total cost incurred to manufacture products that have been completed during a specific period.

Processing Department

A division within a factory where a specific type of production activity or process takes place.