Problem 1: The following equation is to be solved using a single 3-node 1D isoparametric element. +0-0, 0SxSI, where = constant dx a) Derive the weak form for this differential equation. Here the governing equation is given as dy +0-0 To convert the above function to the weak form we integrate it with a weighted function Here we perform integration by parts to find the weak form hence we get. 7 20 L L 3 2 (10pts)