Find the Partial Derivative $$f _ { x } \text { for the function } f ( x , y ) = x ^ { 2 } - 8 y ^ { 2 } + 6 \text {. }$$

Multiple Choice

Find the partial derivative $$f _ { x } \text { for the function } f ( x , y ) = x ^ { 2 } - 8 y ^ { 2 } + 6 \text {. }$$

A) $f _ { x } ( x , y ) = 16 x$
B) $f _ { x } ( x , y ) = 2 x$
C) $f _ { x } ( x , y ) = 32 x$
D) $f _ { x } ( x , y ) = 17 x$
E) $f _ { x } ( x , y ) = 9 x$