Question about Texas Instruments TI-30XA Calculator

If you expand that formula into r^2 +3r - 18 = 0, then you can use the quadratic formula.

The two solutions for r are:

r = (-3 + sqrt((-3)^2 -4(1)(-18))) / 2(1) = 3

and

r = (-3 - sqrt((-3)^2 -4(1)(-18))) / 2(1) = -6

Try typing those in using the calculator to get the same results.

Posted on May 25, 2011

With the calculator: You cannot. By hand you can. In fact when a polynomial is factored out, you know its roots.**P(x)=(X-3)*(X+6).**

If this equation is to be verified, then one of the two factors must be equal to zero.

- If the first factor is zero then X-3=0 and X=3
- If the second factor is to be equal to zero, then X+6=0 and X=-6.
**Hence your solutions are X1=3, and X2=-6**

Posted on Jul 15, 2011

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Posted on Jan 02, 2017

How can you graph equations (functions) if you do not have a graphing calculator?

Feb 12, 2014 | Texas Instruments TI-30XA Calculator

Try pressing

2 [x10^n] 9 + 4 [x10^n] 3 =

[x10^n] is the button just below the [data] button (three buttons above the 8 button).

2 [x10^n] 9 + 4 [x10^n] 3 =

[x10^n] is the button just below the [data] button (three buttons above the 8 button).

Jun 12, 2012 | Texas Instruments TI-30XA Calculator

Unfortunately, the TI-30Xa calculator does not handle algebraic expressions.

If you are interested in knowing more about the capabilities of the calculator, follow the link to download the guide book.

If you are interested in knowing more about the capabilities of the calculator, follow the link to download the guide book.

Mar 01, 2012 | Texas Instruments TI-30XA Calculator

Of course you can divide by a log. As an example, to divide 2 by the log of 3, press

2 / 3 LOG =

To divide 2 by the natural log of 3, press

2 / 3 LN =

2 / 3 LOG =

To divide 2 by the natural log of 3, press

2 / 3 LN =

Oct 27, 2011 | Texas Instruments TI-30XA Calculator

This calculator cannot solve equations and does not have an x key. You will require a calculator with a computer algebra system like the TI-89 or TI-nSpire CAS.

Mar 06, 2011 | Texas Instruments TI-30XA Calculator

I have a few questions and then I should be able to help you. In the equation you want to solve there is a letter g. Is this supposed to be there? Does this represent units such as grams? If this is the only units in this equation the answer will be mass not volume. Lets ignore the units and just punch in the numbers. Assuming the equation you want to solve is 3.70/2.50 x 10^-6. The buttons you need to push are 3.7/2.5 EE 6 [+/-] =. The EE button is the exponent button and the [+/-] button is the change sign button, located just below the 3. The change sign button changes the sign of the proceeding character, in this case it changes the 6 into a -6. This calculator will calculate the exponents before it does the multiplication or division so you don't need to use any parentheses for this equation. I hope this helps you out.

Jan 23, 2010 | Texas Instruments TI-30XA Calculator

Hello,

Sorry this calculator cannot solve equations. It does not have the program. It does not know how to do those things. However it can calculate.**Before you can use the calculator you must prepare all yourself. **When you have solved the problem, you ask the calculator to compute the value of what you found.

Let us clean the equation a bit

2(x-4) -5x=-5

Get rid of the parentheses 2(x-4) becomes 2x-2*4=2x-8 .Put that result where it was in equation

2x-8 -5x=-5

Group together the terms that have x in them 2x-5x=-3x

Then

2x-8-5x=-5, becomes -3x-8=-5

You want to isolate the term with x (have it on one side, and the others on the other side) -3x= -5 -(-8)= -5+8 =3.

The equation becomes

-3x=3 Thus**-x=3/3=1 and x=-1.**

**In general you would have obtained x= (some number/some other number) and that is where the calculator would intervene.**

Hope it helps.

Sorry this calculator cannot solve equations. It does not have the program. It does not know how to do those things. However it can calculate.

Let us clean the equation a bit

2(x-4) -5x=-5

Get rid of the parentheses 2(x-4) becomes 2x-2*4=2x-8 .Put that result where it was in equation

2x-8 -5x=-5

Group together the terms that have x in them 2x-5x=-3x

Then

2x-8-5x=-5, becomes -3x-8=-5

You want to isolate the term with x (have it on one side, and the others on the other side) -3x= -5 -(-8)= -5+8 =3.

The equation becomes

-3x=3 Thus

Hope it helps.

Sep 11, 2009 | Texas Instruments TI-30XA Calculator

You re-asked this question more clearly and I answered it.....

Dec 14, 2008 | Texas Instruments TI-30XA Calculator

well I`am having a promblem with fractins and its hard for me to divid a fration

Jan 25, 2008 | Texas Instruments TI-30XA Calculator

The TI-30XA cannot solve algebraic equations. You need a more advanced calculator for that, like the TI-89.

Regards,

javabytes

Regards,

javabytes

Oct 04, 2007 | Texas Instruments TI-30XA Calculator

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