Question about Texas Instruments TI-89 Calculator

Before it works fine, when I try to factor, expand, find d but now it give me only numbers. I'm guessing I probably messed up on some settings and I try going through the mode menu changing everything and nothing worked.

Before

d/dx( 3x^2+2x,X) = 6x+2

Now

Same thing = 62

Factoring gives me something similar.

Thanks in advance.

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Oh yeah, you must've archived x, that is, you put a number onto the x variable so that the calculator calculates the answer for you, and THEN AUTOMATICALLY calculates the answer when x is in terms of that number. I am guessing you accidentally did 10[sto] x at one point. You can simply unarchived the x number and everything will be dandy!

Posted on Jul 23, 2008

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Posted on Jan 02, 2017

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A **factor** that is a **prime** number. Any of the **prime** numbers that, when multiplied, give the original number. Example: The**prime factors** of 15 are 3 and 5 (3×5=15, and 3 and 5 are**prime** numbers).

Jun 15, 2017 | Prime Computers & Internet

Normally, we look for the greatest common factor and the least common multiple.

To find the least common factor, we have to factor both numbers and see what the least common factor is. However, we know the one set of factors for every number is itself and one. For example, 56 and 49.

The factors of 56 are 1, 2, 4, 7, 8, 14, 28 and 56.

The factors of 49 are 1, 7, 49.

What is the least common factor of both numbers? 1

So the least common factor of any two numbers is 1.

Any questions, let me know.

Good luck,

Paul

To find the least common factor, we have to factor both numbers and see what the least common factor is. However, we know the one set of factors for every number is itself and one. For example, 56 and 49.

The factors of 56 are 1, 2, 4, 7, 8, 14, 28 and 56.

The factors of 49 are 1, 7, 49.

What is the least common factor of both numbers? 1

So the least common factor of any two numbers is 1.

Any questions, let me know.

Good luck,

Paul

Jun 01, 2016 | Office Equipment & Supplies

I do not think that the FX115ES can give you the prime factor decomposition of a number. The FX115ES Plus may do it.

On the FX991 ES Plus there is key marked FACT.. It is the one between the Change sign key (-) and the HYPerbolic key.

I am afraid you will have to do the decomposition of the two numbers by hand. For example

1440=(2^5)(3^2)(5)

700=(2^2)(5^2)(7)

By multiplying the two number you can get a multiple of both but it won't be the smallest.

What you do is scan the two decompositions to identify the various prime factors, 2,3,5, 7

All those factors must be present in the LCM. For each prime factor, select the largest exponent . This is going to be 5 for factor 2, 2 for factor 3, 2 for factor 5, and 1 for factor 7

Hence**LCM(1440,700)= (2^5)(3^2)(5^2)(7^1)=50400**

Verify that 50400/1440=35 and 50400/700=72

On the FX991 ES Plus there is key marked FACT.. It is the one between the Change sign key (-) and the HYPerbolic key.

I am afraid you will have to do the decomposition of the two numbers by hand. For example

1440=(2^5)(3^2)(5)

700=(2^2)(5^2)(7)

By multiplying the two number you can get a multiple of both but it won't be the smallest.

What you do is scan the two decompositions to identify the various prime factors, 2,3,5, 7

All those factors must be present in the LCM. For each prime factor, select the largest exponent . This is going to be 5 for factor 2, 2 for factor 3, 2 for factor 5, and 1 for factor 7

Hence

Verify that 50400/1440=35 and 50400/700=72

Sep 22, 2014 | Casio FX-115ES Scientific Calculator

Hello there,

First you need to find the P'rime factors' of 5765 which are 5 * 1153

Therefore the Exponential form of 5765 is 51 x 11531

You MUST find the PRIME FACTORS

(That means the two Prime numbers that when multiplied together gives the answer.

. Go here to see how. to 'manually calculate like we used to do it,

http://www.calculatorsoup.com/calculators/math/prime-factors.php

Nowadays just search for**'Prime Factors Calculator**' on your search engine.

First you need to find the P'rime factors' of 5765 which are 5 * 1153

Therefore the Exponential form of 5765 is 51 x 11531

You MUST find the PRIME FACTORS

(That means the two Prime numbers that when multiplied together gives the answer.

. Go here to see how. to 'manually calculate like we used to do it,

http://www.calculatorsoup.com/calculators/math/prime-factors.php

Nowadays just search for

Sep 10, 2014 | Office Equipment & Supplies

The polynomial cannot be factored in the set of Real numbers: The roots of the polynomial equation are complex.

You should use the command**cFactor(** found under F2:Algebra> A:Complex>2:cFactor(

However, you should set the Mode Complex>Rectangular, and the EXACT/APPROXIMATE mode to Exact, otherwise your roots will be in decimal representation.

You should use the command

However, you should set the Mode Complex>Rectangular, and the EXACT/APPROXIMATE mode to Exact, otherwise your roots will be in decimal representation.

Jan 01, 2014 | Texas Instruments TI-89 Calculator

This calculator does not have a key that you can use to find the prime factor of an integer.

You can however use the calculator to find the factors

1.** If number is even divide it by 2**

Keep dividing by 2, while keeping track of how many times you divided by 2.

If you divided 5 times by 2 before getting an odd number, then your first factor is 2^5

2.**Now try dividing by 3**, keep track of the number of times you divided by 3 before you could not divide by 3 any more. If you divided 0 times by 3, your second factor is 3^0, or 1 and 3 is not a factor.

If you divided 4 times by 3, your second factor is 3^4

3.**Divide by 5,** until you can't any more. Keep track of the number of times you divided by 5.

4. Divide by all other prime numbers 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, etc. For each prime number, keep track of how many times you divided by it, until you could not any more.

**Example: 23100**

*Division by 2*

23100/2=11550 ---------> 1 division by 2

11550/2=5775 ----------> 2 divisions by 2

Note that 5775 is not divisible by 2.** No more divisions by 2. **

First factor is 2^2

*Division by 3:*

5775/3=1925 ----------> 1 division by 3

1925/3=641. 66667 Not an integer. No more divisions by 3.

**2nd factor is 3^1**

*Division by 5 (number ends in 5)*

1925/5 =385 -------> 1 division by 5

385/5=77 ----------> 2 divisions by 5 and no more (quotient does not end in 0 or 5)

**3rd factor is 5^2**

*Division by 7 *

77/7=11 --------> 1 division by 7, and no more

**4th factor is 7^1=7**

*Division by 11*

11/11=1

**5th factor is 11^1=11**

Assembling the factors 2^2, 3^1, 5^2, 7, 11

Prime factorization of 23100 is

**23100=(2^2)(3)(5^2)(7)11**

You can however use the calculator to find the factors

1.

Keep dividing by 2, while keeping track of how many times you divided by 2.

If you divided 5 times by 2 before getting an odd number, then your first factor is 2^5

2.

If you divided 4 times by 3, your second factor is 3^4

3.

4. Divide by all other prime numbers 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, etc. For each prime number, keep track of how many times you divided by it, until you could not any more.

23100/2=11550 ---------> 1 division by 2

11550/2=5775 ----------> 2 divisions by 2

Note that 5775 is not divisible by 2.

First factor is 2^2

5775/3=1925 ----------> 1 division by 3

1925/3=641. 66667 Not an integer. No more divisions by 3.

1925/5 =385 -------> 1 division by 5

385/5=77 ----------> 2 divisions by 5 and no more (quotient does not end in 0 or 5)

77/7=11 --------> 1 division by 7, and no more

11/11=1

Assembling the factors 2^2, 3^1, 5^2, 7, 11

Prime factorization of 23100 is

Dec 18, 2013 | Texas Instruments TI-30XA Calculator

16.41 km/l

Apr 15, 2011 | Ford Explorer Sport Cars & Trucks

Simple. The calculator interpreted what you entered as much as it could. However when it got to the 2mn part, it recognized the factor 2 and carried out the multiplication of 3 and 2 to give 6, but you never defined for it what mn was. To make sure it understands, insert an explicit multiplication sign between m and n, otherwise it considers the grouping as some new variable. Implicit multiplication cases are easily recognized when they involve a number and a variable, but not when two letters follow one another.

Note: I believe you are not using the right command. Yes, it gives the result here, but the command you should be using is factor( rather than expand(. expand( will open up parentheses and lengthen the expressions. Just thought you might want to know.

Note: I believe you are not using the right command. Yes, it gives the result here, but the command you should be using is factor( rather than expand(. expand( will open up parentheses and lengthen the expressions. Just thought you might want to know.

Feb 21, 2011 | Texas Instruments TI-Nspire Graphic...

I am somewhat puzzled at your affirmation concerning factoring and expanding algebraic expressions. The TINspire does not do symbolic algebra, only the TI Nspire CAS does.

If you have the TINspire CAS, (version 2.x) you can

If you have the TINspire CAS, (version 2.x) you can

- press the HOME button, then select A:Calculate.
- In one of the pages, press MENU.
- Select [3:Algebra]
- Use Down Arrow or enter the number 2:Factor, or 3:expand
- In the command line, expand( , complete the command by entering the expression, close the right parenthesis and press [ENTER].
- The calculator should give you the expanded result.

Feb 08, 2011 | Texas Instruments TI-Nspire Graphic...

what i would do is go to the home screen and hit f6 and hit 'clear a-z' then you're good.

Oct 04, 2007 | Texas Instruments TI-89 Calculator

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