2.1) Error propagation. 

Derive the propagated error equation for the following equation:

	Vm(T,P) = V0 + c1 * (T-T0) + c2 * (P-P0) + c3 * (T-T0)^2 + c4 * (P-P0)^0.5

	where 	V0 ± s 
			c1 ± s; c2 ± s; c3 ± s; c4 ± s
			T ± s; P ± s

Hint: Split the equation in parts and then combine the partial propagated error equations