symja_android_library

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Use this library to implement `NSum` and improve `NIntegrate` - https://github.com/mike-gimelfarb/numerical-integration @mike-gimelfarb I did an initial implementation of your project in package `org.matheclipse.core.numerics` and used the `TanhSinh` quadrature to implement...

axkr

Error solving nonlinear system of equations

7

Solver fails to solve the following nonlinear system of equations (4th order terms) ``` th = 2400 tk = 320 Solve({th^4 - tw^4 -1.77E-6*qw == 0, tw^2 - t1^2 +2454*(tw...

iils-jdinkelacker

How to implement an IEvalStepListener to show steps on how to solve equations?

2

How should implement the `IEvalStepListener` to show the steps on how to solve a (for example) polynomial equation of degree 2. Can you provide a simple implementation for it so...

OmidNejadabbasi

Use Apache ECharts for `ListPlot*` based value plotting - https://echarts.apache.org/en/index.html Set `ToggleFeature.JS_ECHARTS = true` to enable ECharts output

axkr

`Rationalize(878159.58,1*10^-12) - Rationalize(431874.32,1*10^-12) // N` returns wrong result

5

There is the input: ```mma Rationalize(878159.58,1*10^-12) - Rationalize(431874.32,1*10^-12) // N ``` That gives wrong result: ```mma 𝟦𝟦𝟨𝟤𝟪𝟧.𝟥 ``` Expected result: ``` 446285.25999999995 ```

tranleduy2000

Numeric integration returns wrong result for `N[ integrate(1/x,{x,0,1}) ]`

4

There is the input, the integral of `1/x` from 0 to 1 is a divergent integral: ```mma N[ integrate(1/x,{x,0,1}) ] ``` Error result: ```mma 𝟣𝟢.𝟥𝟩𝟦𝟩𝟨 ``` Expected result: ```mma Indeterminate...

tranleduy2000