10 Replies Latest reply: Mar 17, 2011 6:23 AM by MikeArmstrong RSS

    Regression of a trigonometric function or of an exponential function

    FloFi23 Copper

      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.