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  2. Semi-log plot - Wikipedia

    en.wikipedia.org/wiki/Semi-log_plot

    The linear–log type of a semi-log graph, defined by a logarithmic scale on the x axis, and a linear scale on the y axis. Plotted lines are: y = 10 x (red), y = x (green), y = log(x) (blue). In science and engineering, a semi-log plot/graph or semi-logarithmic plot/graph has one axis on a logarithmic scale, the other on a linear scale.

  3. List of open-source software for mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_open-source...

    The primary difference between a computer algebra system and a traditional calculator is the ability to deal with equations symbolically rather than numerically. The precise uses and capabilities of these systems differ greatly from one system to another, yet their purpose remains the same: manipulation of symbolic equations.

  4. TK Solver - Wikipedia

    en.wikipedia.org/wiki/TK_Solver

    TK Solver has three ways of solving systems of equations. The "direct solver" solves a system algebraically by the principle of consecutive substitution. When multiple rules contain multiple unknowns, the program can trigger an iterative solver which uses the Newton–Raphson algorithm to successively approximate based on initial guesses for ...

  5. Log-linear model - Wikipedia

    en.wikipedia.org/wiki/Log-linear_model

    A log-linear plot or graph, which is a type of semi-log plot. Poisson regression for contingency tables, a type of generalized linear model . The specific applications of log-linear models are where the output quantity lies in the range 0 to ∞, for values of the independent variables X , or more immediately, the transformed quantities f i ( X ...

  6. Decline curve analysis - Wikipedia

    en.wikipedia.org/wiki/Decline_curve_analysis

    Decline curves are the most common means of forecasting oil and gas production. Decline curves have many advantages: they use data which is easy to obtain, they are easy to plot, they yield results on a time basis, and they are easy to analyze. Decline curves are also one of the oldest methods of predicting oil reserves. [5]

  7. Log–log plot - Wikipedia

    en.wikipedia.org/wiki/Loglog_plot

    In science and engineering, a loglog graph or loglog plot is a two-dimensional graph of numerical data that uses logarithmic scales on both the horizontal and vertical axes. Power functions – relationships of the form y = a x k {\displaystyle y=ax^{k}} – appear as straight lines in a loglog graph, with the exponent corresponding to ...

  8. Semi-logarithmic - Wikipedia

    en.wikipedia.org/?title=Semi-logarithmic&redirect=no

    Pages for logged out editors learn more. Contributions; Talk; Semi-logarithmic

  9. PSI-Plot - Wikipedia

    en.wikipedia.org/wiki/PSI-Plot

    PSI-Plot features an Excel-style spreadsheet where users can manage and analyze their data, perform various numerical calculations, solve their equations, and visualize their data in 2D and 3D graphics. Users can also import their data from various formats including Microsoft Excel, ASCII, CSV, Microsoft Access, and dBase.