I am using a fx9860G and i am trying to compute an exponential regression equation. On a Ti8300 the exponential regression equation is a x b^x and on my fx9860G it is a x e^bx. I was wondering how i can make the equation on my Casio match the equation that is on the Texas Instrument? Thanks for you help.
Exponential Regression Equation.....
Started by
blakjac
, Mar 06 2007 12:33 AM
2 replies to this topic
#1
Posted 06 March 2007 - 12:33 AM
#2
Posted 06 March 2007 - 12:01 PM
Let uppercase B denote b on the texas and lowercase b denote b on the casio.
i) y=a.e^(bx)
is the same as:
ii) y=a.(e^b)^x (this is one of the rules of powers)
and what you are looking for is:
iii) y=a.B^x
By comparing ii) and iii) you can see that B=e^b
So whatever answer the casio gives you, use e^b to get B in the Texas equation.
i) y=a.e^(bx)
is the same as:
ii) y=a.(e^b)^x (this is one of the rules of powers)
and what you are looking for is:
iii) y=a.B^x
By comparing ii) and iii) you can see that B=e^b
So whatever answer the casio gives you, use e^b to get B in the Texas equation.
#3
Posted 06 March 2007 - 02:45 PM
Thank you for your help.
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