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3017 Views 10 Replies Latest reply: Mar 17, 2011 6:23 AM by MikeArmstrong RSS
FloFi23 Copper 6 posts since
Mar 16, 2011
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Mar 16, 2011 12:17 PM

Regression of a trigonometric function or of an exponential function

Hi,

is it possible to do a regression as simple as in a graphing calculator?

There I have got a statistic menu where i can write down my x and y values. Then I hit the [Reg]ression button and the [sin]us button. Done.

 

I tried to solve my problem in MathCad with 2 vectors and the sinfit function, but it does not work :/

 

There is the same problem with an exponential function...

There I used expfit, where it said the "guessing"-vector is optional, so I left it out. -> No solution...

 

Can u help me??

Thank You.

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