complex number

Thread Starter

pot

Joined Nov 9, 2015
9
hi

how I can collect this number use my hand and calculator "fx-991ES"?
complex number

e^0.00931 e^j0.3730 in radiant
 

Papabravo

Joined Feb 24, 2006
12,389
There might be a missing symbol in the expression. The first number is a plain or real number.

\[e^{0.00931} = 1.009\]

For the second expression you can use the Euler Identity

\[e^{jx}=cos(x)+j sin(x)\]

x is in radians
 
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WBahn

Joined Mar 31, 2012
24,684
hi

how I can collect this number use my hand and calculator "fx-991ES"?
complex number

e^0.00931 e^j0.3730 in radiant
Can you do it without a calculator? Or are you relying on the calculator being a brain substitute?

You calculator supports polar entry of complex numbers. Converting your expression above to polar is trivial

Magnitude = e^0.00931
Angle = 0.3730 radians

Look at your owner's manual for how to enter the values:

http://support.casio.com/storage/en/manual/pdf/EN/004/fx-115_991ES_PLUS_C_EN.pdf

Look on page 25.
 

Papabravo

Joined Feb 24, 2006
12,389
I hadn't thought of an implied multiplication!

\[e^{0.00931} \cdot e^{j0.3730} = e^{0.00931+j 0.3730}\]

Duh!
 
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