<div>
Does that formula have a name? There might be a function already built to deal with it.<br />
<br />
Thanks<br />
Rob H
</div>


Does that formula have a name? There might be a function already built to deal with it.

Thanks
Rob H

<div>
Might be worth explaining what the intention/result of the formula is then so that other experts with more mathematical knowledge would recognise it.<br />
<br />
Thanks<br />
Rob H
</div>


Might be worth explaining what the intention/result of the formula is then so that other experts with more mathematical knowledge would recognise it.

Thanks
Rob H

<div>
Hi,<br />
<br />
You also don't define wi<br />
<br />
Regards
</div>


<div>
the intention of the formulation is predicting the value X at Step N depending on the previous values of X ,by applying a sort of exponential weighted Average <br />
<br />
foR EXEMPLE at the step N=2 and the weight w=0.03 the Formulavalue = 7 e^((0.03)*1)+50e((0.03)*0)<wbr />/(e^((0.03<wbr />)*1) +1)
</div>


the intention of the formulation is predicting the value X at Step N depending on the previous values of X ,by applying a sort of exponential weighted Average

foR EXEMPLE at the step N=2 and the weight w=0.03 the Formulavalue = 7 e^((0.03)*1)+50e((0.03)*0)/(e^((0.03)*1) +1)

<div>
pls see my try on your data<br />
<br />
Regards<br />
<a href="https://filedb.experts-exchange.com/incoming/2015/08_w32/927632/EE20150807.xlsx" target="_blank" class="file-inline" title="EE (11 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>EE20150807.xlsx</a>
</div>


pls see my try on your data

Regards
EE20150807.xlsx [https://filedb.experts-exchange.com/incoming/2015/08_w32/927632/EE20150807.xlsx]

EE20150807.xlsx

<div>
<div class="content wysiwyg-content">
I would like to know how to express this formula using Excel <br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2015/08_w32/927586/Capture.PNG" target="_blank" title="Capture.PNG (1 KB)"><img alt="Capture.PNG" class="file-block lazyload" style="max-width: 252px;" data-src="https://filedb.experts-exchange.com/incoming/2015/08_w32/927586/Capture.PNG" /></a><br />
And Applied it &nbsp;on this table :<br />
<br />

<pre><code id="code-8270701">N             X                  Formulatvalue
1            50                    
2            7
3            10
4            20
5            30
6            4</code></pre>
</div>
</div>


Capture.PNG

I would like to know how to express this formula using Excel 



And Applied it  on this table :



Formula in Excel

Microsoft Excel topics include formulas, formatting, VBA macros and user-defined functions, and everything else related to the spreadsheet user interface, including error messages.

Microsoft Excel

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