How to do polar form like mathcad?

How to do polar form like mathcad? - polar form - Messages

#1 Posted: 5/27/2022 12:19:56 PM
Joseph Lo

Joseph Lo

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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
#2 Posted: 5/27/2022 1:57:54 PM
Вячеслав Мезенцев

Вячеслав Мезенцев

1402 likes in 1708 posts.

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You can use this method

complex number.jpg
Russia ☭ forever, Viacheslav N. Mezentsev
#3 Posted: 5/27/2022 8:25:23 PM
Joseph Lo

Joseph Lo

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Wrote

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
#4 Posted: 5/28/2022 2:24:39 AM
Вячеслав Мезенцев

Вячеслав Мезенцев

1402 likes in 1708 posts.

Group: Moderator

Wrote

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
#5 Posted: 5/28/2022 1:24:22 PM
Jean Giraud

Jean Giraud

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Plot the circle as well.

PolarCircle.PNG
#6 Posted: 5/29/2022 1:43:42 AM
Joseph Lo

Joseph Lo

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Group: User

Wrote

Wrote

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) = ?
#7 Posted: 5/29/2022 1:46:01 AM
Joseph Lo

Joseph Lo

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Group: User

Wrote

Plot the circle as well.

PolarCircle.PNG



Interesting thanks for that. I will experiment with that.
#8 Posted: 5/29/2022 8:36:55 AM
Jean Giraud

Jean Giraud

983 likes in 6866 posts.

Group: User

Wrote

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 (5 KiB) downloaded 30 time(s).
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