A thin metal triangular plate (as pictured) has its three edges held at constant temperatures Ta = 140°C, T = 90°C and Tc The augmented matrix is: Ta Ta Number t₁ t₂ = Number tą Ta Number Tb t₁ t3 Te Tb t₂ Te When the temperature of the plate reaches equilibrium, the temperature of the plate at an internal grid point is approximately the average of the different temperatures of the plate at the surrounding four grid points. Th Formulate a system of three linear equations that can be solved to determine the internal temperatures t₁, to and t3. Write the system as an augmented matrix, and then input this matrix using Maple's Matrix command (make sure that all elements of the augmented matrix are written as whole numbers or fractions here, do not use decimals). Te 70°C. Reduce the augmented matrix to row-echelon or reduced row-echelon form and hence determine the approximate temperatures t₁, to and to in degrees Celsius to two decimal places. (degrees Celsius, to 2 decimal places) (degrees Celsius, to 2 decimal places) (degrees Celisus, to 2 decimal places)