Question

what you wrote about me sis ?
can you answer?

what is healthy lifestyle​

Answer 1

Explanation:

eat healthy food

paly outdoor

Answer 2

Answer:

I wrote to all my freinds that I am leaving brainliy bcz i felt very bad when @opaarot left

and i started following u

all my friends also said that no pls don't leave brainly we will try to call @opaarot

and i think they answered u but it got deleted

by the way pls don't leave

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) .