# Not Possible To Transform An Complex Number With Variables To Polar

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### #1 acid111

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Posted 24 April 2007 - 11:43 AM

Ok, next problem

why it is not possible with ne classpad to transform a complex number variables to polar coordinates ?

e.g. comptopol(A+j*

If i try to calculates comptopol(2+2j) then the classpad shows the right result: 2*√(2) * e^(45?*j)

thx

### #2 vanhoa

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Posted 24 April 2007 - 12:56 PM

Because A may be 0 and A/B may be pi/2

### #3 acid111

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Posted 24 April 2007 - 01:28 PM

???

that shouldn't be a problem for the classpad, because if i enter only:
arctan(B/A), the classpad doesn't show an error. here, "A" may be 0 as well...

the cp shows the result arctan(B/A), there is no problem...

### #4 vanhoa

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Posted 24 April 2007 - 01:33 PM

A and B may not be real.

### #5 acid111

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Posted 24 April 2007 - 02:11 PM

that's no problem, because i can enter: e.g. arctan ( j / (1+j) ) and shows no error.
the result: arctan (0,5 + j 0,5)

so, A or B can be complex.

### #6 vanhoa

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Posted 24 April 2007 - 02:16 PM

No no no...
If you use OS 3, go to Basic Setting and check-on "Varible is real", you will got the result

### #7 acid111

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Posted 24 April 2007 - 02:28 PM

yeeah, thats it thx

but what does this setting mean ???

if i set "Variable is real", i still can save a complex number to a variable .
what is this setting for?

thx

### #8 vanhoa

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Posted 24 April 2007 - 02:44 PM

Varible in calculation is real

### #9 The_AFX_Master

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Posted 24 April 2007 - 05:36 PM

That means that symbolic variables without specific value are taken as reals by the CAS

acid111

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