Question

$$4 { x }^{ 5 } +5 { x }^{ 3 } { y }^{ 2 } -11 { x }^{ 2 } { y }^{ 3 } -16 { y }^{ 5 } /2 { x }^{ 2 } +3xy+4 { y }^{ 2 }$$

Evaluate

$4x^{5}-8x^{2}y^{5}-11x^{2}y^{3}+3xy+5y^{2}x^{3}+4y^{2}$

Differentiate w.r.t. x

$20x^{4}-16xy^{5}-22xy^{3}+3y+15\left(xy\right)^{2}$