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<i>Just for recording of this video clip,
(recordmydesktop.exe has been started...)</i>

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<b>CPU usage goes up to 40%.</b>

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<i>So, from now,</i>

00:00:24.000 --> 00:00:32.000 line:5% position:5% align:start
<i>we will evaluate the rest 60% of CPU capacity.</i>

00:00:32.000 --> 00:00:42.000 line:5% position:5% align:start
<i>All right, let's start LibreOffice Calc.</i>

00:00:54.000 --> 00:01:06.000 line:5% position:5% align:start
<i>Input 1 to all cells of [B1:O1].
(These will be select switchs of each column.)</i>

00:01:10.000 --> 00:01:26.000 line:5% position:5% align:start
<i>Input incremental integer 1, 2, 3, 4, ... to [B2:O2].
(These will be "n".)</i>

00:01:30.000 --> 00:01:46.000 line:5% position:5% align:start
<i>Calculate 2n+1 of every column and put them to [B3:O3].</i>

00:01:50.000 --> 00:02:06.000 line:5% position:5% align:start
<i>Input 0.1 incremental number 0, 0.1, 0.2, ... to [A6:A100].
(This will be "θ(rad)".)
(10rad is nearly equal to 3π means 1.5 period.)</i>

00:02:10.000 --> 00:03:10.000 line:5% position:5% align:start
<i>Calculate θ^(2n+1)/(2n+1)!
for all cells across the field [A6:O100].</i>

00:03:20.000 --> 00:03:34.000 line:5% position:5% align:start
<i>Plot every columns separately according to θ.
(Each column just only shows "θ to the power of n".)
(Traces are varied by n.)</i>

00:03:34.000 --> 00:03:38.000 line:5% position:5% align:start
<i>Move the graph.</i>

00:03:38.000 --> 00:03:44.000 line:5% position:95% align:end
<b>Hmmm... it doesn't come with mouse dragging.</b>

00:03:44.000 --> 00:04:00.000 line:5% position:5% align:start
<i>Sum up all colums and put them to [P6:P100].</i>

00:04:04.000 --> 00:04:20.000 line:5% position:5% align:start
<i>Plot the result.
(Maclaurin series of sinθ.)</i>

00:04:22.000 --> 00:04:28.000 line:5% position:5% align:start
<i>Fix X Y scales.</i>

00:04:30.000 --> 00:04:33.000 line:5% position:95% align:end
<b>Whoa! graph shape is distorted for a moment,</b>

00:04:33.000 --> 00:04:38.000 line:5% position:95% align:end
<b>And also, it doesn't come with mouse dragging.</b>

00:04:50.000 --> 00:05:20.000 line:5% position:5% align:start
<i>Subtract columns one by one.</i>

00:05:20.000 --> 00:05:50.000 line:5% position:5% align:start
<i>Conversely, add columns one by one.</i>

00:05:55.000 --> 00:06:01.000 line:5% position:95% align:end
<b>It seems that CPU had been reached it's upper limit
at the timing of re-plotting (with calcutation).</b>