Trident Help

Natural Color Graphing manual · Chapter 8 of 18

Complex numbers

Arithmetic with i, and the CPLX tools.

8.1Calculate with i#

Choose a+bi or r∠θ in SET UP (Complex Mode). Type i with ALPHAi×10ˣ. The CPLX group in OPTN holds Abs, Arg, Conjg, ReP and ImP.

Example 8.1

Square of 1 + i

  1. SET UP, Complex Mode a+bi, EXIT.

    SHIFTSET UPMENU▼▼▼F2EXIT

  2. (1 + i)².

    (1+ALPHAi×10ˣ)x²EXE
Result of the example "Square of 1 + i" The display shows: (1+i)² / 2i / · DEL-H MAT MATH · ·.
You should see2i
Example 8.2

Root of a negative number

  1. With a+bi mode, √-4.

    SHIFTSET UPMENU▼▼▼F2EXITSHIFT√x²(−)4EXE
Result of the example "Root of a negative number" The display shows: √(-4) / 2i / · DEL-H MAT MATH · ·.
You should see2i
Example 8.3

Real mode refuses

  1. In Real mode √-4 fails.

    SHIFT√x²(−)4EXE
Result of the example "Real mode refuses" The display shows: Non-Real ERROR / Press:[EXIT].
You should seeNon-Real ERROR
OPTN then CPLX The display shows: i Abs Arg Conjg ReP ImP.
OPTN then CPLX

fx-CG50 is a trademark of Casio Computer Co., Ltd.. Trident Calculator is an independent product by South View Studios and is not affiliated with, sponsored by or endorsed by Casio. The name is used only to describe the kind of calculator this model resembles; Trident's names, keys, display, fonts and software are its own clean-room design.