SOURCE: Basic Q's
The LOG and LN keys do what you have done.
To get 9 to the 16th power, enter 9, "y to the power x" (under the OFF key) then 16, then =
3 to the 12th power is the same, enter 3, y to the power x, 12, =, result 531,441
The inverse key sequence: value 1, 2nd, y to the power x, value 2, returns the xth root of y, e.g. 531,441, 2nd, y to the power x, 12, =, gives you 3 back
SOURCE: how to calculate log value in calculator with different base value
In any scientific calculator log2(n) can be calculated with either ln or log function as
follows
Log2(n)= ln(n) / ln(2)
Or
Log2(n)=log(n) / log(2)
both will give nearly the same answers
SOURCE: I'm trying to calculate r values on my TI-83 for
Press [2nd][0] to access the (CaTALOG) of commands.
Press the [X^-1] key (D) to jump to first command that starts with the letter D. From there, use down arrow to point to DiagnosticOn and press [ENTER] twice.
From now on (unless you reset the calculator), the correlation coefficients R and R^2 will ne displayed along with the regression results for all models where R and R^2 are meaningful.
You used "r-values" as if what you mean should be clear to everyone, but it is not. And there is a possibility I might have misread your mind. If that be the case, ignore the answer I gave and refrain from rating it. Post a comment instead, spelling out what you need the calculator to compute.
Testimonial: "Thanks so much! Just what I needed!"
SOURCE: Hi: I bought a HP 10bii Financial Calculator. I
What you've done is calculate the future value after 3 months, not 3 years.
Press 1 SHIFT [P/YR] to set the payments per year to one. Now the FV key should give you 115.76
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