Logarithmic Regression Graph; Exponential Regression Graph - Casio FX-CG20 AU User Manual

k Logarithmic Regression Graph
Logarithmic regression expresses
regression formula is
linear regression formula
The following is the logarithmic regression model formula.
y a b
= + ·ln
a
.............. regression constant term
b
.............. regression coefficient
k Exponential Regression Graph
Exponential regression expresses
standard exponential regression formula is
y
sides we get ln
linear regression formula Y = A +
The following is the exponential regression model formula.
y a e bx
= ·
a
.............. regression coefficient
b
.............. regression constant term
x
y a b
= ·
a
.............. regression constant term
b
.............. regression coefficient
y
as a logarithmic function of
y a b x
= + × ln , so if we say that X = ln
y a b
= + X.
1(CALC) 6( g) 2(Log)
6(DRAW)
x
y
as a proportion of the exponential function of
a bx
= ln + . Next, if we say Y = ln
bx
.
1(CALC) 6( g) 3(EXP)
1( ae ) or 2( ab
bx x
)
6(DRAW)
x
, the formula corresponds to
bx
y a e
= × , so if we take the logarithms of both
y
, and A = ln
6-19
x
. The standard logarithmic
x
. The
a
, the formula corresponds to