1-Visitor

Question

Leaving out part of sinuscurve

Forum|Forum|10 years ago
November 2, 2015
24 replies
7943 views

How do i leave out part of a sinus curve? How do i write it if, i were supposed to leave out the first 45° of this. I have MathCad 14.

Other

W

Werner_E

25-Diamond I

You may define you function either by using the if-statement (Programming palette) or the if() function. Set the function to zero for values of t smaller than pi/4 or set it to NaN if you don't want to see anything in that range.

Is making the function periodic of interest?

WE

1_Sinus_WE1-xmcdz.zip

T

tlauridsen

Author

1-Visitor

I'm not sure I understand it. Is there anything I should do different in the one i have done? Or should i do it all in another way? I can't find Programming palette.

EDIT: Couldn't see the added files before. I think i understand it now. Thanks a lot

W

Werner_E

25-Diamond I

Tommi Lauridsen wrote:

I can't find Programming palette.

If there aren't any additional question you may consider closing this thread-

WE

V

ValeryOchkov

24-Ruby IV

The sin is the finest Math curve - see please

Video Link : 2202

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-MFra-

21-Topaz II

Hi Tommi Lauridsen! I think I have the answer to your problem. Open the attached file with Mathcad 15 or see below.

The range of the variable in your description is not correct.

finally

The second picture could be this if you exchange the two step function as follows:

1_for-tlauridsen-xmcd.zip

T

tlauridsen

Author

1-Visitor

Wow.. That seems a little tough...

I will look into it tomorrow.. But I'm not sure i have got the right answer yet. If i take to hole cycles(2*T) and I would like leave out the first 45° degrees of each? Like in the first picturer Werner posted? Is that possible somehow? I'm thinking that you somehow can you radians?

Sorry if I misunderstand any of your replys.

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-MFra-

21-Topaz II

Hello! You can choose the interval that you prefer simply varying tau and delta .

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-MFra-

21-Topaz II

03.11.2015.png

1_for-tlauridsen-xmcd.zip

S

StuartBruff

23-Emerald V

Nice sheet, FM.

Here's another option for the periodic case that also doesn't plot the 'missing' points.

Stuart

1_for-tlauridsen-xmcd.zip

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-MFra-

21-Topaz II

In real signals (energy or power) used in electronics the zero return is essential. To leave the function floating at a certain instant or in a time interval also periodically in practice is a mistake. Your solution is useful in other cases but not in the representation of signals (voltages and currents) functions of time.