How do i do inequalities with ti-30x - Texas Instruments TI-30 XIIS Calculator

SOURCE: TI-30x...I am trying to figure out how I use this calculator

Hello,
Entering the keys and number as you write it can be done with enough parenthees to make sure calculator does what we intend it to.
But I would rather use the commutativity propertie of multiplications to same me some extra ().

Step 1
4 [(+/- change sign)][2nd][10 to the x] [ X ]6.1923 [=]
Step2
[x^2][=]
I first calculate the product 6.1928 x 10^-4 then take the square of the result. Because you can never be sure that the calculator takes 6.1923 to power 2 then multiply or multiply 6.1928 x 10^-4 and raise to power 2.
You can force the calculator with an opening parenthesis and a closing one but if you omit the ) and get an error, it may be hard to detect.

Hope it helps.

SOURCE: I need to find a manual for my TI-30X IIS

Hi,

You can download the required manual from:

http://education.ti.com/educationportal/sites/US/productDetail/us_ti30x_iis.html?bid=6

Hope this solves your problem. For more help and clarifications, please reply to this post. Thanks

SOURCE: How to do nPr or nCr on TI-30x Solar (scientific calc.)

If you have an older version on the TI30x Solar (not TI30Xa or newer) then you must use a different key sequence for nPr/nCr.

52 [2nd][x/y] 5 [2nd][nCr] gives 2598960 (the x/y button is above the Pi symbol on my version).
8 [2nd][x/y] 3 [2nd][nPr] gives 336

This took me forever to find out, so hopefully it will help someone!

SOURCE: how do i go from dms to decimal degrees with my ti-30x IIs

Press the key that is marked with a small circle, an apostrophe, and a double quotation mark. That is the DMS key. You can use it to convert from Decimal degress to DMS and back.