Three variables are measured to be A = 12.3 + -0.4, B = 5.6 + -0.8 and C = 89.0 + -0.2. Calculate the mean and uncertainties in Z when it is related to. A, B and. C Via the relations:
(vi) Z = A × B² × C³
(viii) Z = exp(ABC)
Use both functional and calculus methods for each part to propagate error and report results for Z.
