# complex number support? - Hewlett Packard

This is a discussion on complex number support? - Hewlett Packard ; I'm trying to enter the complex number 1e^(j*pi). If I understand the manual correctly, I have to enter the following: switch to radians mode enter: (1, *enter symbol for angle here*pi) But the calc gives only an error. It seems ...

# Thread: complex number support?

1. ## complex number support?

I'm trying to enter the complex number 1e^(j*pi).

If I understand the manual correctly, I have to enter the following:
switch to radians mode
enter: (1, *enter symbol for angle here*pi)

But the calc gives only an error. It seems it doesn't accept symbolic/exact
expressions.
My very cheap CASIO calc accepts expressions like the value pi, roots or
fractions and displays the result as a multiple of these values, if
appropriate.

Can't I expect the same from my HP [50g]?

How can I enter the example above?

2. ## Re: complex number support?

On Apr 16, 5:44 pm, Mario83 wrote:
> I'm trying to enter the complex number 1e^(j*pi).
>
> If I understand the manual correctly, I have to enter the following:
> switch to radians mode
> enter: (1, *enter symbol for angle here*pi)
>

> But the calc gives only an error. It seems it doesn't accept symbolic/exact
> expressions.
> How can I enter the example above?

Exact mode on, complex mode on:

'e^(i*pi)' ->NUM => (-1,-1.26676153736E-12), that is, -1.

HTH

Gerson.

3. ## Re: complex number support?

"GWB" schrieb im Newsbeitrag
> On Apr 16, 5:44 pm, Mario83 wrote:
>> I'm trying to enter the complex number 1e^(j*pi).
>>
>> If I understand the manual correctly, I have to enter the following:
>> switch to radians mode
>> enter: (1, *enter symbol for angle here*pi)
>>

>
>> But the calc gives only an error. It seems it doesn't accept
>> symbolic/exact
>> expressions.
>> How can I enter the example above?

>
> Exact mode on, complex mode on:
>
> 'e^(i*pi)' ->NUM => (-1,-1.26676153736E-12), that is, -1.
>
> HTH
>
> Gerson.
>

.... and "EVAL" yields the symbolic answer, -1.

Chris.

4. ## Re: complex number support?

On Mon, 16 Apr 2007 15:44:53 -0500, Mario83 wrote:

> I'm trying to enter the complex number 1e^(j*pi)
> as (1, angle_symbol*pi)

> My very cheap CASIO calc accepts expressions like the value pi,
> roots or fractions and displays the result as a multiple of these values,
> if appropriate. Can't I expect the same from my HP [50g]?

> How can I enter the example above?

What the subsequent replies may not have fully explained
is that you can express symbolic components
only within algebraic expressions, e.g. '(x,y)'

Unquoted syntax like (3,4) accepts only pure numbers
as components, because a "complex number object"
(object type 1) can contain only pure numbers (reals)
as components; for any components that are expressions
or involve symbols, you must instead use an algebraic expression
for the entire object, either '(x,y)' or 'x+y*i'

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