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Math Help - Help please logs!!

  1. #1
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    Help please logs!!

    Hi Can someone please explain how do I calculate the following:
    Attached Thumbnails Attached Thumbnails Help please logs!!-untitled-1.jpg  
    Last edited by ticktack; September 15th 2007 at 10:47 AM.
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    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by ticktack View Post
    Hi Can someone please explain how do I calculate the following:
    i will show you how they calculated the first one (when time = 0), the others are similar.

    recall that: \log_a (xy) = \log_a x + \log_a y

    also recall that: \log_x \left( x^a \right) = a

    So for t = 0, we have 1.995 \times 10^{5} variable cells.

    So, \log_{10} \left( \mbox {variable cells} \right) = \log \left(  1.995 \times 10^5 \right)

    ................................... = \log 1.995 + \log 10^5

    ................................... \approx 0.3 + 5

    ................................... = 5.300

    of course, for = \log 1.995, you plug that into your calculator. now do the rest in the same way
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    thanxxxxxxx so much

    Another question, how would I plot the following points on a graph with the axis been given....
    Attached Thumbnails Attached Thumbnails Help please logs!!-logs.jpg   Help please logs!!-graph2.jpg  
    Last edited by ticktack; September 16th 2007 at 04:27 AM.
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    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by ticktack View Post
    thanxxxxxxx so much

    Another question, how would I plot the following points on a graph with the axis been given....
    those axis aren't large enough to plot all the data given, but otherwise plotting is easy. let the horizontal axis be time and the vertical axis be the cell density. for each row, you have a time and a cell density, each row will make one point. pick a row, go to the horizontal axis and find the time, then move up in a vertical line on till you get to the horizontal line that represents the corresponding cell density.

    basically what you are doing is drawing a vertical line from the time on the horizontal axis and a horizontal line from the cell density on the vertical axis, and wherever the lines meet, that's where you mark a point. connect all the points with a line and there's your graph
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