Important Notice for Owners of the TI-30X IIS, TI-30X IIB, TI-34 II, and TI-40 College II
This replacement offer is good through January 31, 2001.
We listen to our customers, especially when you tell us things you don't
like.
We've been pleased to hear that you like our new, two-line calculators,
and we're proud of the benefits they provide. But we were extremely
surprised and concerned when we heard that when specific,
multi-decimal-place values are used in combination with specific
functions in our TI-30X IIS, TI-30X IIB, TI-34 II, and our TI-40 College
II, an incorrect answer is returned.
We halted production of these products and fixed the software. As we
did so, our engineers concluded that the chance of this situation
occurring in an individual's average use is remote, given the specific
functions and combinations needed. (These are detailed below.)
However, these errors are not consistent with our efforts to provide you
with the best possible educational products for your needs.
New, revised product is now shipping to stores. If, however, you have
affected product*, and you're concerned about its performance, please
contact us at the phone numbers or email address listed below and we
will replace your product.
* In order to confirm that the above issue impacts your calculator,
please check the date code, which is stamped into the plastic, or on a
small, plastic label, on the back of your calculator. Date codes begin
with either an "N" or a "C", and then four numbers follow. Only
calculators with date codes earlier than 1299 are affected,
for example N0699 or C0899.
[Telephone numbers and email addess omitted.]
Background - TI-34 II, TI-40 College II
For the TI-34 II and the TI-40 College II, the following functions and
ranges will give incorrect results for products with date codes earlier
than 1299. The result for the range limits shown will be correct and the
values between these limits will be incorrect.
Function: log() and ln()
Also Y^X if Y is inside the range shwn and X is any value other than
an integer in the range {0,9}.
Also X ROOT Y if Y is inside the range shown and X is not equal to
one or negative one.
Also CUBE ROOT X if X is inside the range shown.
Entry Value between 1.221402765935 and 1.222222222223
Entry Value between 1.020201346154 and 1.020202020203
Entry Value between 1.002002001340 and 1.002002002003
Entry Value between 1.000200020001 and 1.000200020003
Entry Value between 0.9801980198019 and 0.9801986674200
Entry Value between 0.9980019980019 and 0.9980019986620
Background - TI-30X IIS, TI-30X IIB
For the TI-30X IIS and the TI-30X IIB, the following functions and
ranges will give incorrect results for products with date codes earlier
than 1299. The results for the range limits shown will be correct and the
values between these limits will be incorrect.
Function: log() and ln()
Also Y^X if Y is inside the range shwn and X is any value other than
an integer in the range {0,9}.
Also X ROOT Y if Y is inside the range shown and X is not equal to
one or negative one.
Also CUBE ROOT X if X is inside the range shown.
Entry Value between 1.221402765935 and 1.222222222223
Entry Value between 1.020201346154 and 1.020202020203
Entry Value between 1.002002001340 and 1.002002002003
Entry Value between 1.000200020001 and 1.000200020003
Entry Value between 0.9801980198019 and 0.9801986674200
Entry Value between 0.9980019980019 and 0.9980019986620
Function: tanh^-1()
Also gives incorrect results for the negatives of the values below:
Entry Value between 9.966799777635 e-02 and 1.0 e-01
Entry Value between 9.999669682703 e-03 and 1.0 e-02
Entry Value between 9.999996696697 e-04 and 1.0 e-03
Entry Value between 9.999999966966 e-05 and 1.0 e-04
Entry Value between 9.999999999669 e-06 and 1.0 e-05
Entry Value between 9.999999999996 e-07 and 1.0 e-06
Function: cosh^-1()
Entry Value between 1.005004168374 and 1.005037815260
Entry Value between 1.000050000446 and 1.000050003751
Function: sinh^-1()
Also gives incorrect results for the negatives of the values listed below:
Entry Value between 1.001667532187 e-01 and 1.005037815259 e-01
Entry Value between 1.000016967064 e-02 and 1.000050003750 e-02
Entry Value between 1.000000169669 e-03 and 1.000000500000 e-03
Entry Value between 1.000000001696 e-04 and 1.000000005000 e-04
Entry Value between 1.000000000016 e-05 and 1.000000000050 e-05
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