Can TI-83 Calculate Exponentials in Cartesian Form?

[14prc]

hi guys,
I have a little bit strange question

Somebody maybe know how to add to exponential on calculator to get directly answer, i mean like that:

8.7exp(-i145)+5.4exp(-i285) = 5.81exp(i176)

but i don't know how get this without polar form

 

[jedishrfu]

this is not a calculation you do on your calculator unless you have one that can do complex number addition.

The 8.7exp(-i45) ... are complex numbers you need to convert each number to trig form from the euler form you have and then to x + iy form before adding them.

 

[14prc]

I tried this aslo but is not working, just adding/substracting real and imaginary part. I thought to change smth in MODE but but didt help

 

[jedishrfu]

why do you have to do it on the calculator? is that what the teacher said?

or does he/she expect you to use the calculator to convert it to the trig and then x+iy format and then use the calculator again to add the real and imaginary parts and then convert back to the euler format?

 

[14prc]

its for course electric power, need to count current faster

 

[jedishrfu]

okay i don't think the ti-83 can do that without a third party program.

The TI-89 can do it though see this tutorial:

http://www.tc3.edu/instruct/sbrown/ti83/complx89.htm

newsflash I found this (apparently you can do it on the TI-83):

http://www.tc3.edu/instruct/sbrown/ti83/complx83.htm

 

[14prc]

Thanks you so much :) i will test :)