Mathcad Returns Error When Attempting To Use A Vector Input For A Piecewise Function Hi, I'm using a range variable and multiple functions to plot the capacity and demand of a beam system to check for failure. This works well and as I intend. The problem arises when I want to find the specific utilization of the member along it's length. To do this, I wanted to create a vector containing the input lengths instead of a range variable, so that I can perform math on the functions and output a vector. This way I will have a vector of the members utilization along its length and won't have to manually check separate inputs. As shown in the image above, the vector "v" works as an input into function "V(v)" but not in the function "Va(v)". Is this because "Va(v)" is a piecewise function? Is there a way to evaluate this function using vectors? If there is a trick to getting vectors as inputs to functions, or simply a better way entirely to accomplish the task of creating a single vector with the utilizations as I de