Question

what is perfect
explain​

Answer 1

Answer:

pls don't leave sis

I will give u points

pls I beg u

Using the chain rule with u = xy for the partial derivatives of cos(xy) ∂ ∂x cos(xy) = ∂ cos(u) ∂u ∂u ∂x = − sin(u)y = −y sin(xy) , ∂ ∂y cos(xy) = ∂ cos(u) ∂u ∂u ∂y = − sin(u)x = −x sin(xy) . Thus the partial derivatives of z = sin(x) cos(xy) are ∂z ∂x = cos(xy) cos(x) − y sin(x) sin(xy) , ∂z ∂y = −x sin(x) sin(xy) .Using the chain rule with u = xy for the partial derivatives of cos(xy) ∂ ∂x cos(xy) = ∂ cos(u) ∂u ∂u ∂x = − sin(u)y = −y sin(xy) , ∂ ∂y cos(xy) = ∂ cos(u) ∂u ∂u ∂y = − sin(u)x = −x sin(xy) . Thus the partial derivatives of z = sin(x) cos(xy) are ∂z ∂x = cos(xy) cos(x) − y sin(x) sin(xy) , ∂z ∂y = −x sin(x) sin(xy) .

Answer 2

Answer:

completely good; without faults or weaknesses.

Explanation:

Something that is perfect is complete and without defect or blemish. It might also be precisely accurate or exact. The word perfect can also be used as a verb meaning — you guessed it! — to make something perfect.