Calculate $\frac { \partial ^ { 2 } f } { \partial y ^ { 2 } }$ , $\frac { \partial ^ { 2 } f } { \partial x y }$ and evaluate each at $( 8,8 )$ .
$f ( x , y ) = 1,070 - 20 x + 11 y + 9 x y$
Enter your answers, separated by a comma.

Question

Calculate $\frac { \partial ^ { 2 } f } { \partial y ^ { 2 } }$ , $\frac { \partial ^ { 2 } f } { \partial x y }$ and evaluate each at $( 8,8 )$ .
​ $f ( x , y ) = 1,070 - 20 x + 11 y + 9 x y$ ​
Enter your answers, separated by a comma.

Quizplus · Accepted Answer

The Answer of Calculate $\frac { \partial ^ { 2 } f } { \partial y ^ { 2 } }$ , $\frac { \partial ^ { 2 } f } { \partial x y }$ and evaluate each at $( 8,8 )$ .
​ $f ( x , y ) = 1,070 - 20 x + 11 y + 9 x y$ ​
Enter your answers, separated by a comma.

Calculate ∂2f∂y2\frac { \partial ^ { 2 } f } { \partial y ^ { 2 } }∂y2∂2f​

Calculate $\frac { \partial ^ { 2 } f } { \partial y ^ { 2 } }$