Casio fx-CG20 kArithmetic Operations, kReciprocals, Square Roots, and Squares, Abs, Arg, ReP, ImP, Conjg, Example, Example, (3 + i), (1 + 2i) + (2 + 3i)

Press K3(COMPLEX) to display the complex calculation number menu, which contains the following items.

•{i} ... {imaginary unit i input}

•{Abs}/{Arg} ... obtains {absolute value}/{argument}

•{Conjg} ... {obtains conjugate}

•{ReP}/{ImP} ... {real}/{imaginary} part extraction

•{'r∠}/{'a+bi} ... converts the result to {polar}/{rectangular} form

•You can also use !a(i) in place of K3(COMPLEX)1(i).

•Solutions obtained by the Real, a+bi and r∠ modes are different for power root (x') calculations when x < 0 and y = m/n when n is an odd number.

Example: 3x'(– 8) = – 2 (Real)

=1 + 1.732050808i (a+bi)

=2∠60 (r∠, Deg mode)

•To input the “ ∠ ” operator into the polar coordinate expression (r∠), press !v(∠).

kArithmetic Operations [OPTN]-[COMPLEX]-[i]

Arithmetic operations are the same as those you use for manual calculations. You can even use parentheses and memory.

Example (1 + 2i) + (2 + 3i)

AK3(COMPLEX)

(b+c1(i))

+(c+d1(i))w

kReciprocals, Square Roots, and Squares

Example (3 + i)

AK3(COMPLEX)

!x(')(d+1(i))w

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