TI -86 用户手册

Chapter 20: A to Z Function and Instruction Reference

291

20ATOZ.DOC TI-86, Chap 20, US English Bob Fedorisko Revised: 02/13/01 2:42 PM Printed: 02/13/01 3:05 PM Page 291 of 118

Equal to:

TEST menu

The == operator is used to
compare arguments, while
= is used to assign a value
or expression to a variable.

numberA

numberB

matrixA

matrixB

vectorA

vectorB

stringA

stringB

Tests whether the condition argumentA == argumentB
is true or false. Numbers, matrices, and vectors can be
real or complex. If complex, the magnitude (modulus)
of each element is compared. Strings are case-sensitive.

•

If true (argumentA = argumentB), returns

•

If false (argumentA

ƒ argumentB), returns

2+2==2+2 b

2+(2==2)+2 b

[1,2]==[3

1+3] b

"A"=="a" b

listA

listB

Returns a list of

s and/or

s to indicate if each element

in listA is = the corresponding element in listB.

{1,5,9}=={1,

6,9} b

{1 0 1}

Euler

† graph format screen

(scroll down to
second screen)

Euler

DifEq

graphing mode, uses an algorithm based on the

Euler method to solve differential equations. Typically,

Euler

is less accurate than

but finds the solutions

much quicker.

eval

MATH MISC menu

eval

xValue

Returns a list containing the

values of all defined and

selected functions evaluated at a real xValue.

Remember that built-in equation variables

and

are case-sensitive:

y1=x^3+x+5 b

Done

y2=2 x b

Done

eval 5 b

{135 10}