GRAPHINGAlgebraFigure 6 Log-Log Plot of Frequency vs. Wavelengthof Electromagnetic RadiationIn summary, the type of coordinate system used to plot data, cartesian, semi-log, or log-log,should be based on the type of function to be graphed and the desired shape (curve or line) ofthe curve wanted.Cartesian system - Linear (y = mx + b) type functionswhen plotted will provide straightlines; exponential functions (y = ex)will plot as curves.Semi-log system - Should not plot linear type functionson semi-log. Exponential functions,such as radioactive decay and reactorpower equations when plotted willgraph as straight lines.Log-log - Rarely used; used to plot power equations.MA-02 Page 80 Rev. 0
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