Question about Texas Instruments TI-30XA Calculator

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Order of Operations

How do put ( ) on my calculator.

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Use the parentheses keys just above the 8 and 9 keys.

Posted on Feb 05, 2010

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How do I enter ln55-1 divided by 2? The answer is 1.5 however I'm coming up with 1.99

Be careful with the order of operations. Try (ln(55)-1)/2You can never have to many parenthesis. remberr PEMDAS ln is an exponent so you want to put it inside parenthesis in oder to follow the Order of operations.

Apr 10, 2015 | Texas Instruments TI-83 Plus Calculator

2 Answers


According to the operation priority rules
The result is 2+2+12=16
If you have a series with increasing denominators then you should use parentheses to force the calculator to do as you intended.
or 1/2 +1/2/4 +1/2/4/6=31/48 or 0.645833333.....3

Oct 09, 2013 | Sharp ELW535 Calculator

1 Answer

When i try to put anything with in prentice the prentice don't display

If you're referring to parenthesis, this is correct. They don't display. They merely alter the order of operations. For example, if you press
5 * 3 + 4 = the calculator will produce 16, which is (5*3)+4. If you press
5 * ( 3 + 4 = the calculator will produce 35, which is 5*(3+4).

Nov 12, 2012 | Texas Instruments BA-II Plus Calculator

1 Answer

How do you program the order of operations into the calc?

The order of evaluation is fixed. You can override this order in an expression by using parenthesis. For example, 3+4*5 is evaluated by multiplying 4 by 5 and then adding 3. If you want to do the addition first, you can enter it as ( 3 + 4 ) * 5 .

The order of evaluation is given in the "Equation Operating System" section of Chapter 1 of the manual.

Jun 10, 2011 | Texas Instruments TI-83 Plus Calculator

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Why is it that when I put in negative numbers squared, the answer comes out negative? EX: -105 ^ 2 = -11025 The above is what my calculator states (which is clearly wrong because it shouldn't be...

If you're pressing the keys
(-) 1 0 5 ^ 2 ENTER
then you're not squaring a negative number, you're negating a square. This sequence of keystrokes calculates -(105^2), and -11025 is the correct answer for this.

Since the ^ operator binds more tightly than the (-) operator, you need to tell the calculator you want to override the order of operations, just as you would if you wanted an addition done before a multiplication. Press
( (-) 1 0 5 ) ^ 2 ENTER and you will see the expected result.

Jan 23, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

How do i multiply fractions on texas instrument TI-83 calculator

The division sign acts like a fraction on the ti-83; to multiply two fractions you may want to wrap them both in parenthesis to get the order of operations correct.
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Sep 24, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

TI-83 Plus No Longer Squares Correctly

when you type -2 imagine your calculator doing the equation: -1 x 2. The - sign actually stands for a -1 so when you do -2 squared your calculator is simply following order of operations. It first squares the 2 making it 4, then it multiplies the negative making it -4. In order to get around this you must use parenthese. (-2)^2.

Hope this helped

Nov 20, 2008 | Texas Instruments TI-83 Plus Silver...

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My TI-84 plus displays -2^2=-4. That is incorrect. What is wrong?

this a simple misunderstanding of calculator lingo. When u enter the -2 the calculator is actually doing -1 x 2 according to order of operations the exponent will be done first then the -1 multiplied. So to stop this from happening u must do on ur calculator (-2)^2 = 4

Nov 18, 2008 | Texas Instruments TI-84 Plus Calculator

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