HP Prime Polar Mode

[dorbitbrown]

Make

I couldn't fully understand the point you were making in your last post.   It is not because I don't understand the math--I am an electrical engineer, so I do understand it. The  formulas you provide are correct, and I agree they work in Home View. When you wrote, "-19*e^i*pi Enter [angle]", I assume you were talking about Home View, since you used "Enter".  However, this is NOT about entering complex numbers in Home View.  It is about writing a program in HP PPL--HP Prime Programming Language. 

Yes, I could convert from polar to rectangular to construct complex numbers in PPL (and that is what I am doing while this gets resolved), but I would only do so if there were no way to directly enter polar numbers in PPL.   I've programmed many HP calculators over the past 40 years, which leads me to believe HP would never intentionally design one of their products that way.  Tim seems to agree. 

I believe Tim is correct that there may be an issue, so let's let this rest while he investigates, and we will see what he finds.

Thanks again for all your suggestions,

Doug

[Maké]

Hi!, dorbitbrown:

While Tim, who works at HP, developments, along with the other members, discussed the possibility in the future, to make it possible, your concern for future versions, I advise you use the tools you have today.

You can working, with user variables ... See ... http://www.hpmuseum.org/forum/thread-34.html

[Maké]

Hi!, dorbitbrown:

You can use, in CAS, DEGREES, the command, of catalog, for convert polar coordinates.

 

[Stevetuc]

I notice this is still a problem in 10077 😞
Here's a workaround using EXPR:

EXPORT Rect_to_Polar(X,Y)
BEGIN
EXPR(EXPR("ABS(X+Y*i)")+"∡"+EXPR("ARG(X+Y*i)"))
END;

Rect_to_Polar(1,1) correctly returns 1.41421356237∡45

Would be good to see this fixed in next release though!

Steve

[Stevetuc]

In fact I've just noticed that this simpler version also works:

EXPORT Rect_to_Polar(X,Y)
BEGIN
EXPR(ABS(X+Y*i)+"∡"+ARG(X+Y*i))
END;

Steve

[Stevetuc]

Just noticed this workaround was mentioned earlier in the thread, and it only provides a way of entering a polar representation of a number in PPL, and doesn't address the OP question .

[Maké]

Hi!, @Stevetruc:

Welcome, to Forum!.:smileyhappy:

You can see, this link ... http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv021.cgi?read=254617