Not calculation Ln

SOURCE: screen frozen calculator not responding to buttons pressed.

give it a factory reset, this works, you will lose any unarchived data : http://www.associatedcontent.com/video/265/how_to_reset_a_texas_instruments_ti89.html?cat=59

SOURCE: How do you put the fourth root into scientific calculator

Do whatever the number is then ^(1/4)

SOURCE: Inputing scientific notation into my calculator

Hello,

1. To convert a number to scientific equation, use [2nd][Sci]
Exemples 12345 [=] screen shows 12345 Then [2nd][Sci] coverts it to 1.2345 ^04 to the power 4.
2. To enter directly a number in scientific notation (e.g. -1.2345 X10^(-65) a very small number) you use the [EE] key 1.2345[+ /-][EE][+/-]65 shows as -1.2345 -65
1.6X10^(-19) 1.6[EE][+/-]19 shows as 1.6 -19

Hope it helps

SOURCE: I need to use the exponential function e x (Ln)

Hi,
To access the exponential function press [2nd] [e^x]
To type your expression:
45 [*] [2nd][ e^x] [( ] .03 [*] .75 [ ) ]

Do not forget the parentheses. If need be, press [=]. The result should be 46.02397654

Hope it helps.
Thank you for rating this solution.

SOURCE: syntax error on TI-30XIIS calculator when i press

I had the same problem and finally figured out how to fix it. You need to clear the memory. To do so, first press and release the 2nd button at the top left of the calculator. You will see "2nd" appear on the screen at the lower left. next press the 0 button (which 2nd function is "Reset"). The key to making this work is: do not hold the 2nd button while pressing the 0 button. You have to press it, release it, and then press the 0 button.