Evaluate $f _ { x }$ And $f _ { y }$

question 43

Multiple Choice

Evaluate $f _ { x }$ and $f _ { y }$ for the function $f ( x , y ) = \frac { 7 x y } { \sqrt { x ^ { 2 } + y ^ { 2 } } }$ at the point $( 4,8 )$ . Round your answer to two decimal places.

• A) \(f _ { x } ( 4,8 ) =\) 5.01 and \(f _ { y } ( 4,8 ) =\) 0.63
• B) \(f _ { x } ( 4,8 ) =\) 4.51 and \(f _ { y } ( 4,8 ) =\) 0.63
• C) \(f _ { x } ( 4,8 ) =\) 3.13 and \(f _ { y } ( 4,8 ) =\) 6.26
• D) \(f _ { x } ( 4,8 ) =\) 5.01 and \(f _ { y } ( 4,8 ) =\) 0.13
• E) \(f _ { x } ( 4,8 ) =\) 3.13 and \(f _ { y } ( 4,8 ) =\) 6.26

Understand the influence of parental investment on mating systems.

Grasp the concept of kin selection and altruistic behavior in evolutionary perspectives.

Recognize the role of natural selection and genetic factors on behavioral traits.

Comprehend the implications of genetic similarity and heritability in relation to personality and physical traits.