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Math Help - Area under amplitude over frequency graph

  1. #1
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    Mar 2009
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    Area under amplitude over frequency graph

    Hi,

    I have a graph with a frequency on the x axis and power density on the y axis. Both scales are logarithmic, and the graph shows a straight line between the points (110Hz, 0.001V^2/Hz) and (200Hz, 0.004V^2/Hz). I need to work out the area under this portion of the graph as it relates to total power.

    So, my understanding is I need to find the function of the line, then set up and evaluate a definite intergral between 110Hz and 200Hz. My real question is, how do I work out the function of the line, and is this a correct method?

    Thanks

    Rob
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  2. #2
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    Mar 2009
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    area under log-log straight line graph

    Ok, lets make this simple, how about helping me find the area under a log-log straight line graph?
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