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How to enter a different log base (other than base e or base 10) into the Texas Instrument TI-80 silver

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The TI-83 doesn't have such a function built-in. Use the relationship logb(x) = log(x)/log(b) = ln(x)/ln(b).

Posted on Jun 04, 2010

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Log 3 base 10


Press LOG 3 ENTER.

The LOG key on the keyboard gives you base-10 (common) logs while the LN key gives you base-e (natural) logs. If you want the log to another base you can use the logBASE function found in the catalog.

Apr 07, 2014 | Texas Instruments TI-84 Plus Calculator

1 Answer

How to enter logarithms in to a ti-83 plus. I know where the log button is but i cant figure out how to put in the base of the log or anything after that. Trying to graph a log.


The TI-83+ has keys for natural and common logarithms (base e and 10, LN and LOG, respectively). If you want to calculate the logarithm to another base, you have to use the relationship

LOGb(x) = LOG(x)/LOG(b) = LN(x)/LN(b)

Apr 10, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

How to enter a different log base (other than base e or base 10) into the Texas Instrument TI-80 silver


You cannot. You must use the formula
log in base b of a =log(a)/log(b) or
log_b(a)=ln(a)/ln(b)
where log(a) is common logarithm of a and ln(a)= natural logarithm of a

If you had the TI84PLUS or TI84PLUS SE, you could have installed the newest OS upgrade and that upgrade uses math print which allows the user to calculate logarithms in any base directly.

Mar 22, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

Texas Instrument TI-34II problem


Press [2nd] [LOG] to display the menu for logs and exponential functions. Select [LN]. Enter the (positive) number, close the right parenthesis and press [ENTER].

Oct 07, 2009 | Texas Instruments TI-34II Explorer Plus...

1 Answer

Guys i need to get an inverse log the same as log-1 ou know how?


Hello

When you talk about the natural logarithms [LN], the inverse of the log is the exponential

ln (exp(x))=exp(ln(x)) =x
but with othe logarithms, thinhs are different
Let us take

y=10^(x)

then with log standing as usual for log in base 10 take the log of both members in the above equality

log(y) =log{10^(x)) = x* log(10) : this is a property of the log function.
However, log(10) =1 This is also a property of the log

Gathering results, we end up with the new equality
log(y)=x or x=log(y)

Without entering into extraneous details that mathematicians adore, we can state that there is an equivalenve between y=10^(x) and x=log(y)

y=10^(x) <-->x=log(y) where <--> means implication in both directions.

Here is a screen capture from another calculator to convinve you. Your calculator cannot do that.

747f13f.jpg

Hope it helps.

Oct 06, 2009 | Texas Instruments TI-30 XIIS Calculator

1 Answer

ENTERING LOGS WITHOUT A BASE OF 10


(log(X))/(log(Y))

X= the base you want
Y=# you are using

May 26, 2009 | Texas Instruments TI-30XA Calculator

3 Answers

How I can get the log base 10 number in a TI 89


"♦" "7" will give you log base 10 for the texas instuments TI-89 Titanium

Feb 20, 2009 | Texas Instruments TI-89 Calculator

3 Answers

Find the antilog on the TI-83 Plus for finding pH in chemistry problems


I reccently had the same problem, but I have a Ti-84 Plus,and I am disgusted by how poorly this matter is covered by Texas Intruments. Esp. since the solution is rather simple.

The antilog key is [2nd] [log] or the 10^x. On your screen it should apear as 10^( and then you just input the value that you want to find the antilog of.

When used to solve pH problems remember to input the pH value as a negative number, since pH= -log[H+] then [H+]= antilog(-pH).

Hope that helped))))) ^^

May 10, 2008 | Texas Instruments TI-83 Plus Calculator

1 Answer

Antilog in chemistry problem


pH is minus (log to base 10) of the hydrogen ion activity of an aqueous solution, or (log to base 10) of (1/hydrogen ion activity)

To get the inverse log, i.e the hydrogen ion activity corresponding to a specified pH, simply enter the pH value and press

2nd
LOG
1/x

Answer 0.001

Apr 22, 2008 | Texas Instruments TI-30XA Calculator

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