Please Help Me With My Calculator Questions

I can do some of the problems on this, but some I can't figure out. The answers on these listed I am getting wrong, I covered up the ones I know. I am obviously making a mistake typing them in my calculator. The ones with the e not in the exponent but the base, I can't figure out how to enter that. I use 2nd-LN for e^.

Any help? My calculator is a ti-30

http://i.imgur.com/khUt5yK.jpg

http://i.imgur.com/XBE2yhK.jpg

http://i.imgur.com/ibuAi5O.jpg

Re: Please Help Me With My Calculator Questions

Is that a "Reverse Polish Notation" (RPN) calculator? I see an Enter button and no equals sign, so I'm guessing it is. You say it's a TI-30, but those were made back in the mid-70's.

Anyways, to use RPN you always start deep in the formula and work your way toward the outside, as opposed tp left-to-right as on a "normal" calculator. So for $\displaystyle e^{5 \sqrt 2-2 \pi}$ start with the square root, then multiply by 5 then do the 2 pi calculation, then subtract that result from the first, then "exponentiate" the result. The sequence is:

2 2nd x^2

5 X

2 Enter

Pi X

Minus

2nd LN

Re: Please Help Me With My Calculator Questions

Quote:

Originally Posted by

**ebaines** Is that a "Reverse Polish Notation" (RPN) calculator? I see an Enter button and no equals sign, so I'm guessing it is. You say it's a TI-30, but those were made back in the mid-70's.

Anyways, to use RPN you always start deep in the formula and work your way toward the outside, as opposed tp left-to-right as on a "normal" calculator. So for $\displaystyle e^{5 \sqrt 2-2 \pi}$ start with the square root, then multiply by 5 then do the 2 pi calculation, then subtract that result from the first, then "exponentiate" the result. The sequence is:

2 2nd x^2

5 X

2 Enter

Pi X

Minus

2nd LN

here is a better picture. i don't think it's from the 70's because I got it from staples a couple weeks ago. probably i just named it wrong. there is an equal sign under enter. it just got cut out of the picture.

http://i.imgur.com/agV7wXE.jpg

Re: Please Help Me With My Calculator Questions

but hey! i think i got the ones without the e in the exponent down. all i have left i think are the ones with the e's in the exponents. i can't seem to find out how to put the e there though?

Re: Please Help Me With My Calculator Questions

Never mind my previous post - I figured out what you have is a TI-30XIIS calculator: TI-30X IIS - Key features by Texas Instruments - US and Canada

It is not RPN, so what you can do is this:

$\displaystyle 5 \times 2\ 2nd\ x^2 + 2 \times \pi \ = \ 2nd \ \ln $

Re: Please Help Me With My Calculator Questions

Our posts overlapped...

Remember that e = e^1. So to get e use: 1 2nd LN

Re: Please Help Me With My Calculator Questions

Re: Please Help Me With My Calculator Questions

The answer is coming out wrong.

im posting it in 2 pictures so you can see the whole problem i typed in.

http://i.imgur.com/JBvMEXr.jpg

http://i.imgur.com/1ysNUuV.jpg

Re: Please Help Me With My Calculator Questions

To calculate: $\displaystyle 10^{3e-4 \sqrt 3 }$ try this:

10^(3 x 1 $\displaystyle e^x$ - 4 x 3 $\displaystyle \sqrt {} $ )