Ti-84 plus results, Important things you need to know about your – Texas Instruments TI-84 User Manual

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Appendix B: Reference Information

642

Important Things You Need to Know About Your

TI-84 Plus

TI-84 Plus Results

There may be a number of reasons that your TI-84 Plus is not displaying the expected
results; however, the most common solutions involve order of operations or mode
settings. Your calculator uses an Equation Operating System (EOS) which evaluates the
functions in an expression in the following order:

Functions that precede the argument, such as square root, sin(, or log(

Functions that are entered after the argument, such as exponents, factorial, r,

¡, and

conversions

Powers and roots, such as 2^5, or 5*square root(32)

Permutations (nPr) and combinations (nCr)

Multiplication, implied multiplication, and division

Addition and subtraction

Relational functions, such as > or <

Logic operator and

Logic operators or and xor

Remember that EOS evaluates from left to right and calculations within parentheses are
evaluated first. You should use parentheses where the rules of algebra may not be clear.