MantisBT - Kalkules | |||||

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ID | Project | Category | View Status | Date Submitted | Last Update |

0000127 | Kalkules | Tools | public | 2017-08-02 03:41 | 2018-07-10 20:00 |

Reporter | guest | ||||

Assigned To | |||||

Priority | high | Severity | major | Reproducibility | sometimes |

Status | resolved | Resolution | fixed | ||

Platform | PC | OS | Windows | OS Version | All |

Product Version | 1.9.6.25 | ||||

Target Version | Fixed in Version | 1.10.0.26 beta | |||

Summary | 0000127: Faulty differentiation of the function (x^2+2x+1)/(x^2+3) | ||||

Description | differentiation of the function (x^2+2x+1)/(x^2+3) gives in first attempt a red error-message the function is changed to: ((x^2)+2x+1)/((x^2)+3) result of the differentiation is: (*(2*x+2)*(x^2+3)-(x^2+2*x+1)*2*x)/(x^2+3)^2 and can't be used for further calculations for the start with (*(... all further attempts result in faulty: (2*x+2*(x^2+3)-(x^2+2*x+1)*2*x)/(x^2+3)^2 here some Brackets around the first 2*x+2 are missing and making the result faulty | ||||

Steps To Reproduce | enter fungtion: (x^2+2x+1)/(x^2+3) or function: ((x^2)+2x+1)/((x^2)+3) press the button "differentiate" in the new opened window press "calculate" | ||||

Additional Information | correct 1st differentiation for both functions is shown in KALKULES-online with ((2*x+2)*(x^2+3)-(x^2+2*x+1)*2*x)/(x^2+3)^2 In Facebook you say, that all the differentiation tool was new written from the scratch for the online-version. Maybe this one should be implemented into the offline-Version too. Yours Uwe Reisinger | ||||

Tags | No tags attached. | ||||

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Issue History | |||||

Date Modified | Username | Field | Change | ||

2017-08-02 03:41 | guest | New Issue | |||

2018-07-10 20:00 | Jardo | Status | new => resolved | ||

2018-07-10 20:00 | Jardo | Resolution | open => fixed | ||

2018-07-10 20:00 | Jardo | Fixed in Version | => 1.10.0.26 beta |

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