TEXTI30XIIB CALC,SCIENTIFIC,2LN,BATT/PWR Review

Average Reviews:

(More customer reviews)Texas Instruments' TI-30X-IIB and IIS series calculators are brilliant and intuitive.Users can think linearly and type into this calculator as they think.For example, if a student wants to find the square root of two, they first hit the square root function, then 2, then Enter, as opposed to typing it backwards (first 2, then the square root key).These calculators have a wide range of fraction functions that make working with mixed numbers and improper fractions a breeze.I recommend these calculators to all of my students who do not yet need to graph.

A previous reviewer mentioned a "bug" where negative numbers must have parentheses around them in order to be taken to exponents correctly.However, this is not a bug, because this follows the standard rules of math.This calculator, like all good ones, follows the order of operations, or PEMDAS (parentheses, exponents, multiplication and division, addition and subtraction) which means that exponents are to be solved before multiplication.Negative signs are supposed to be treated like multiplying a number by negative one.So if "-5^2" is typed into the calculator, the calculator will square the 5 (doing exponents first), and then multiply the answer by the negative 1, giving an answer of -25.In order to correctly square -5, you must put the -5 in parentheses in order to multiply -the 1 by the 5 before the number is squared: "(-5)^2".

This is definitely something that a user should be taught before using this calculator; however, it is not a bug because it is doing exactly what it is supposed to.A calculator should not have to break the rules of math to cater to those who do not know them.

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Product Description:
2 line battery powered scientific calculator showing entry and results. Recall and edit previous entries. Statistics, fractions, 5 memories, polar and rectangular coordinates. Protective cover included.7"w x 10"d x 1"h. TEXTI30XIIB TEX-TI30XIIB 033317198719 3331719871