For (1) I have no idea how to solve it.For (4) I don't know how to do.For (3) I give you the answer is Y+Z=0So please just do (1) and use the answer of (3) to solve (4). (You don't have to do (2) and (3).Thanks so much for your answer!

8h (c) (i) State the chain rule for calculating 83; where h(1:,y,z) = g(f(sc,y,z)) and where g is a function of one variable and f is a function of three variables. Specify where each derivative in your formula is to be evaluated. ( ) Calculate?(m 5wrP1andawwmhere 10(1', 3,, z)=emsmm+ze22 and 193 P: (1,0 0). Determine the equation of the tangent plane at (1, 0, 0) to the surface, S, which consists of all solutions of the equation CU/lwel". Y + Z : O exsmw) + 282: 7 1. ' 1 Calculate a unit vector which is perpendicular to S at (1 0 0). ? I? ? f 2) 7 W W [10 marks]