Texas Instruments TI-86 Manual Book page 279

abs
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Addition:
\
abs realNumber or abs (
Returns the absolute value of realNumber or
realExpression.
abs ( complexNumber )
Returns the magnitude (modulus) of complexNumber.
abs ( real , imaginary
±
abs ( magnitude angle
abs list
abs matrix
abs vector
Returns a list, matrix, or vector in which each element is
the absolute value of the corresponding real or complex
element in the argument.
numberA + numberB
Returns the sum of two real or complex numbers.
number + list
Returns a list in which a real or complex number is
added to each element of a real or complex list.
Chapter 20: A to Z Function and Instruction Reference
realExpression )
) returns (real 2 +imaginary
) returns magnitude.
abs L256.4 b
abs L4...3+13 b
abs (L4...3+13) b
abs (3,4) b
abs (3±4) b
2 ) .
abs {1.25,L5.67} b
abs [(3,4),(3±4)] b
In RectC complex number mode:
(2,5)+(5,9) b
4+{1,2,3} b
3+{1,7,(2,1)} b
267
256.4
25
1
5
3
{1.25 5.67}
[5 3]
(7,14)
{5 6 7}
{(4,0) (10,0) (5,1)}