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Jim351-Visitor
1-Visitor
November 30, 2018
Solved

Help on plotting sine wave and logarithm base e

  • November 30, 2018
  • 4 replies
  • 3383 views

Greeting,

I wanted to plot a function which is the addition of a sine wave and logarithm base e but I couldn't get it to work. Can somebody help me? I am new to Mathcad, please bear with me.Capture.PNG

Best answer by LucMeekes

You raise e to the power t, and t has a dimension (s). Any power that you raise e to MUST be dimensionless. You probably forgot to define and use the time constant (tau?) that t must be divided by in the exponent of e.

ttokoro (above) used a simple 1s for that.

And finally you defined V as an amplitude, but you don't use it, but that shouldn't present a plotting problem.

Anyway:

LM_20181130_Plot.png

 

Success!
Luc

4 replies

ttokoro
ttokoro21-Topaz I
21-Topaz I
November 30, 2018

ans.gif

t.t.
    J
    Jim351-VisitorAuthor
    1-Visitor
    November 30, 2018

    Thank you ttokoro.

    L
    LucMeekes23-Emerald IVAnswer
    23-Emerald IV
    November 30, 2018

    You raise e to the power t, and t has a dimension (s). Any power that you raise e to MUST be dimensionless. You probably forgot to define and use the time constant (tau?) that t must be divided by in the exponent of e.

    ttokoro (above) used a simple 1s for that.

    And finally you defined V as an amplitude, but you don't use it, but that shouldn't present a plotting problem.

    Anyway:

    LM_20181130_Plot.png

     

    Success!
    Luc

      J
      Jim351-VisitorAuthor
      1-Visitor
      November 30, 2018

      Thank you Luc for your detailed explanation!!

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