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Offline tofulover  
#1 Posted : 27 May 2022 18:19:56(UTC)
tofulover

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Hi,

I have just started to use Smath and am liking it so far.

I could not figure out how to enter values in polar form with its angle? say 100/_60deg, i.e. a magnitude of 100 and a degree of 60.

On Mathcad the polar operator is in operator -> engineering menu. I can't find similar in smath but everything else I am at home with.

I can see there is a polxy function but it is not quite the same?

Thanks
Offline uni  
#2 Posted : 27 May 2022 19:57:54(UTC)
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You can use this method

complex number.jpg
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Viacheslav N. Mezentsev
Offline tofulover  
#3 Posted : 28 May 2022 02:25:23(UTC)
tofulover

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Originally Posted by: uni Go to Quoted Post
You can use this method

complex number.jpg


Thanks uni for that. I tried it and it seems to work - but is it possible that i don't key in the "degree" sign and still get the same result? i.e. the polar form of 100/_60deg = 50 + j86.6.

If I dont put the degree sign it will return -95.24 -30.48i which is a different result.

Thanks
Offline uni  
#4 Posted : 28 May 2022 08:24:39(UTC)
uni


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Originally Posted by: tofulover Go to Quoted Post
I tried it and it seems to work - but is it possible that i don't key in the "degree" sign and still get the same result? i.e. the polar form of 100/_60deg = 50 j86.6.


pol2xy.jpg

Russia ☭ forever
Viacheslav N. Mezentsev
Offline Jean Giraud  
#5 Posted : 28 May 2022 19:24:22(UTC)
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Plot the circle as well.

PolarCircle.PNG
Offline tofulover  
#6 Posted : 29 May 2022 07:43:42(UTC)
tofulover

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Originally Posted by: uni Go to Quoted Post
Originally Posted by: tofulover Go to Quoted Post
I tried it and it seems to work - but is it possible that i don't key in the "degree" sign and still get the same result? i.e. the polar form of 100/_60deg = 50 j86.6.


pol2xy.jpg



Thanks! that works well.

How would I convert from polar to rectangular but using the variable instead?

say I have this:

pol(m,a):= m.exp(a.pi/180*i)
V:=pol(1,10) = 0.9841 + 0.1736*i
I:=V/200 = 0.0049 + 0.0009*i

I want to display I in a polar form.
I can use xypolto but not so convenient.

How do I do xypol2(I) = ?

Edited by user 29 May 2022 07:54:03(UTC)  | Reason: Not specified

Offline tofulover  
#7 Posted : 29 May 2022 07:46:01(UTC)
tofulover

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Originally Posted by: Jean Giraud Go to Quoted Post
Plot the circle as well.

PolarCircle.PNG


Interesting thanks for that. I will experiment with that.
Offline Jean Giraud  
#8 Posted : 29 May 2022 14:36:55(UTC)
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Originally Posted by: tofulover Go to Quoted Post
Interesting thanks for that. I will experiment with that.

You can have it Class Room style.
Cheers from Up There to Down Under ... Jean.

Polar Otherwise.PNG

Polar Circle.sm (6kb) downloaded 10 time(s).
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