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 Building a trigonometric function

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AEL Posted - 09/11/2018 : 09:07:58 AM
I am struggling to build a trigonometric function using a fitting function builder. I need it to fit experimental data in polar plot.

My function is: y=A*cos^4(x)+B, where A,B are parameters I do not know.

How can I define the function formula for that? I am trying to do it myself without any success. Can someone give me a hand here?


Ana
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Castiel Posted - 09/11/2018 : 9:00:14 PM
quote:
Originally posted by AEL

I am struggling to build a trigonometric function using a fitting function builder. I need it to fit experimental data in polar plot.

My function is: y=A*cos^4(x)+B, where A,B are parameters I do not know.

How can I define the function formula for that? I am trying to do it myself without any success. Can someone give me a hand here?


Ana


y=A*(cos(x))^4+B


     #####
    #### _\_  ________
    ##=-[.].]| \      
    #(    _\ |  |------|
     #   __| |  ||||||||
      \  _/  |  ||||||||
   .--'--'-. |  | ____ |
  / __      `|__|[o__o]|
_(____nm_______ /____\____

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