Top 10 Texas Instruments BA-II Plus Calculator Questions & Answers

I belive this will fix the problem i was sitting here having the same deal waiting and waiting..then bam error 7 then i fixed it so thought i would put what i did.

go into your CF and delete all the unused CO times..for instance if your using 3 periods...delete all CF05 and F05 the last one should be C04=0 and F04=0 make sure your NPV is the same after messing around..then try to compute IRR popped up in 2 seconds for me.

word hope this helps u all ***420*** :0

Hey,
Just found out the answer!
Apparently you can't have both FV and PV positive. Try the calculation with one of them being negative.

Hello,
On calculators you calculate permutations and combinations as follows
Enter the number n then press key nPr, and the number r
18(nPr)5=1028160

For combinations, use nCr key instead of nPr.
18(nCr)5=8568.

Hope it helps

Hello,
To use the exponential function, you must enter the number then press [2nd][e to the x] or [e^x] for short.

e^(-0.1) is entered as (-)0.1 [2nd][e^x], where (-) is the change sign key
You will need to use extra parentheses to avoid errors.

20 - 18*( (-)0.1 [2nd][e^x] ) [=]
The Minus sign between 20 and 18 is the regular one. The (-) before the 0.1 is the change sign key (-) or sometimes labeled +/-. The asterisk is the multiplication sign.
Hope it helps.

To extract the roots of orders higher than 2, you can use the universal power key labeled as [Y to x]. if the exponent is an integer 3, 4, 5, 6 etc.
it gives the cube the 4th power, 5th, 6th, etc.
If the exponent is 1/3, 1/4, 1/5, 1/6 you calculate the cubic root, the 4th root and so on.
When you use it to calculate the roots, the radicand (the number the root of which you are calculating) must be positive, otherwise you may get the result as a complex number.

The syntax of the command is value [Y to x] (1/ order of root)

Ex: cube root of 27 is entered as 27 [Y to x] (1/3)

The natural logarithm key is just to the left of the 7 key, marked "LN".

Enter the number of months, press N. Enter the annual interest rate, press I/Y. Enter the amount of the loan, press PV. Press CPT then PMT to calculate the amount of the monthly payment.

Full details, as well as how to do other types of calculations, are in the manual.

First, make sure the calculator is set to degrees (2nd [FORMAT] down-arrow).

Put in the value, press INV, the appropriate function key, and =.

For example, to find the inverse sine of .3, press
. 3 INV [SIN] =

Error 5 indicates that no solution exists. In an IRR problem, the most likely cause is that there was not at least one sign change in the cash flow list.

The same way you raise a number to a non-fractional power, using the y^x button. For your example, press
3 y^x ( 1 / 1 2 ) =
or
3 y^x 1 2 1/x =