1. The maximum shear stress T per unit force of a beam is defined as 1 T(b,h, y) = ( ² + b ² y³) bh³ where b is the width of the section, h is the length of the beam and y is the distance from the neutral axis. Find the uncertainty equation for T assuming b, h, and y are variables. (20 pts) 2. Find the uncertainty equation for the following function f assuming x, y, and z are variables. (20 pts) .2 ZX y f(x, y, z) = 2x2² (2x -2/3) y² Z3 Uncertainty equation: R = R(x?,x?,..., X ?) X2 Xn) 2 OR OR n -Ux X? ?R U? -U +...+ X2 Ú. - [(*^ ^ . ) ( ^ ^,; . ) --- ( ,.)]] UR R ox n X? R Rox? R Ox?