Tips for Beginners for the TI 89 Calculator

ln x ( logex is on the keyboard. log x ( log10x is not on the keyboard. To get it key CATALOG 5 , , , , ENTER. Or use log x = ln x/ln 10. E.g. ln 100000/ln 10 gives 5. Pi. To enter , use the key, not 3.14 or 22/7. order of operations. Your calculator knows the order … ................
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