Question about Texas Instruments TI-89 Calculator
Hi sorry everyone, not the brightest light in the shop when putting in this sum on my ti-81 9492 x 2 pi then 1000 / ans then *360 my ti-81 gives me the answer 6.036217816 on my ti-89 i do the same sum to get 15000/(791*pi)
please could anyone help im a bit thick
many thanks john
In addition to k24674's explanation, you can convert from a symbolic answer to a numeric answer by pressing Diamond then Enter.
Posted on Jan 18, 2010
Your TI81 can only perform numerical calculation: It always give uour numbers. The TI89, a more sophisticated calculator, can of course do numerical calculation, BUT ALSO symbolic ones. You ask it for the derivative of sin(x) and it will give you cos(x).
Anyway, if you want a decimal result for you calculation above one of the numbers must have a decimal point (instead of writing 2PI write 2.PI.
The TI 89 can do exact calculations. But if you want approximate results any number in the sequence of operations must have the mark of a decimal. Numbers without decimal marks are considered integers, Integer numbers with a decimal mark are treated as floating point numbers ( meaning decimal).
Hope it clarifies things for you.
Posted on Sep 05, 2009
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Posted on Jan 02, 2017
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