# User Portlet

Discussions |
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Thanks Patrik. That's helpful. I've been holding out since I really need stream connectors. Glad to hear you're working on it. |

I think the product terms x[t] y[t] and z[t] a[t] are giving it trouble. DSolve can be hit or miss, though maybe someone else has a trick. NDSolve can do it though. Note your solutions go to infinity rather quickly. eqn1 = D[x[t], t] ==... |

So I played around. Yeah it seems DSolve recognized something with the ICs that it liked. So that isn't helping you much. However, this might help you with some tricks related to the infinite series. Also notice I used DSolveValue to avoid getting... |

This works pretty well. Numeric .... solpru = NDSolve[{D[y[x, t], t] == -D[D[y[x, t], x], x], y[0, t] == Sin[0], y[Pi, t] == Sin[Pi], y[x, 0] == Sin[x]}, y, {x, 0, Pi}, {t, 0, 1}, MaxSteps -> Infinity, PrecisionGoal -> 3, ... |

I think it's the [ and ] near the mu in your P function. Also it diverges at around t=450. See if this fixes you up. Eric Ps. I see Marco found the same issue before me. |

Haven't been able to upgrade yet either. In the past they've made them available to Home Edition users so just give it a few days hopefully. |

It took some playing around but I think I got it to read the table. I still get these warnings below, but it seems to work. Warning: Unused input variable tableAvailable in function .Modelica.Blocks.Tables.CombiTable1D.getTableValue. Warning:... |

Outstanding. That works perfectly. ![enter image description here][1] [1]: /c/portal/getImageAttachment?filename=ScreenShot2014-07-30at5.21.57PM.png&userId=84697 I'm a little surprised the rebuild button in SimulationCenter doesn't work... |

You're right I did not understand what you were asking. However, I'm still perplexed since Plot plots functions, not equations. 2 x^2 + 3 x == 20 This is **not** a function. What's surprising to me is Mathematica used to turn it into a function... |

Strange, it works in Mathematica 10 Home Edition. Are you sure you typed it in as you've shown? ![enter image description here][1] [1]: /c/portal/getImageAttachment?filename=ScreenShot2014-07-26at4.41.17PM.png&userId=84697 |