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Hi, I am just working through some examples on the solution to PDEs of all three main types, before progressing onto the Burgers' Equation, prior to solving and plotting my own version of it regarding the research that I am doing. In one example, entitled Linear and Quasi-Linear PDEs, I have successfully got as far as In[4] := eqn = 2p + 3q + z == 0, but I am unable to successfully negotiate the next line, In[5] := sol = DSolve[eqn, u, {x, y}]. Contrary to the example, I seem to be obtaining completely different results, rather than the general solution that is expected and stated on the next line, namely Out[5] = C[1]exp(-x/2)[(-3x + 2y)/2]. I have tried a good number of measures to rectify this issue, including substituting 'PDE' for 'eqn', and a whole host of other things (as highlighted in the help and search sections), but nothing seems to work. Can anyone help me with the updated and correct syntax for this command. Thank you, SWM