# User Portlet

Discussions |
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Hi; I am having difficulty using the Disk[] primitive to define my integration region - see attached. This method is quite new to me, however it seems really elegant, and I would sure like to learn how to use it correctly. Thanks, Mitch... |

Hi; I am trying to find the radius of the smallest sphere centered at {2,2,2} that also intersects the surface z = x + 1 using Lagrange Multipliers - see attached notebook. Believing that I have found the correct solution using Lagrange... |

Hi Gianluca; Thanks for the quick reply, I really appreciate it. Actually, I was in the process of trying to verify the given answer when I ran into problems with the Solve[] function. What you stated is exactly right - that the given answer is... |

The quizzes used to indicate which ones were incorrect, but within the last year that was changed. I found the old method of indicating which answers were correct educational and the new method not so much. Thanks, Mitch Sandlin |

Hi Arben; In this response, I have attached a notebook outlining exactly what I hope to accomplish with this problem, which is understanding how to perform these calculations using Mathematica. The attached notebook shows 5 or 6 different methods... |

Hi Jim and thanks so much. Would using the Variable function (Variable[ChiSquareDistribution[v]]) be a better option since calculating the variance is my Gold? However, I am not sure how to load the parameters of this function, and since there is... |

Hi; Please see attached notebook for explanation where I am trying to plot additional information along x- axes using Epilog in the Plot function or Show by trying to combine the Plot and NumberLinePlot functions. Thanks, Mitch Sandlin |

Hi; Please see the attached notebook which includes embedded text comments. My question actually has more to do with the Wolfram language than Mathematics, and specifically the Table and AssociationThread functions. My goal is to end up with a... |

Hi Rohit; In implement your suggestion, I did not see much change - see attached notebook. However, there is a good possibility that I misunderstood your suggestion and implemented it incorrectly. As a little background, I ran exactly the... |

Hi; In my example (see attached notebook), the values calculated by the NormalCI[] function does not equal the values calculated by the table and it my understanding that the two calculation methods should give the same answer since I am using a... |