The directional derivative of (x,y) at the point A(3,2) towards the point B(2,3). What is (3 sqrt{2} ) and toward the point (1,0) is ( sqrt{8} ). What is the directional derivative at the point A towards the point D.

The directional derivative of (x,y) at the point A(3,2) towards the p

1.	The directional derivative of (x,y) at the point A(3,2) towards the point B(2,3). What is (3 sqrt{2} ) and toward the point (1,0) is ( sqrt{8} ). What is the directional derivative at the point A towards the point D.
A.	( frac{6}{5} )
B.	( frac{7}{ sqrt{5}} )
C.	( frac{6}{ sqrt{5}} )
D.	( frac{7}{5} )
Answer» C. ( frac{6}{ sqrt{5}} )

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