Will give it a thumbs up if done correctly. Thank you.

Question 2 (1) Use a tree diagram to write down the chain rule for calculating a" 8" @ Where u : 57%? at f(% y) and 93 = 90", my = W, at) (2) Calculate 23, 21:, gig for (7", s, t) : (4, 2, 1), where u : $4+at2y and x : T+25t, y : rstZ