Logarithmic Regression Graph; Exponential Regression Graph - Casio fx-FD10 Pro User Manual

Quadratic regression
Model formula .......
a
.......... regression second coefficient
b
.......... regression first coefficient
c
.......... regression constant term
y
( -intercept)
Quartic regression
Model formula .......
a
.......... regression fourth coefficient
b
.......... regression third coefficient
c
.......... regression second coefficient
d
.......... regression first coefficient
e
.......... regression constant term (
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 In
linear regression formula Y = A +
The following is the exponential regression model formula.
bx
y a e
= ·
a
.............. regression coefficient
b
.............. regression constant term
x
y a b
= ·
a
.............. regression constant term
b
.............. regression coefficient
y ax 2 bx c
= + +
y ax 4 bx 3 cx
= + +
y
y
as a logarithmic function of
y a b x
= + × In , so if we say that X = In
y a b
= + X.
1(CALC)6(g)2(Log)
6(DRAW)
x
y
as a proportion of the exponential function of
a bx
= In + . Next, if we say Y = In
bx
.
1(CALC)6(g)3(EXP)
1( ) or 2(
aeˆbx abˆx
6(DRAW)
Cubic regression
Model formula .......
a
.......... regression third coefficient
b
.......... regression second coefficient
c
.......... regression first coefficient
d
.......... regression constant term
y
(
2 dx e
+ +
-intercept)
bx
y a e
= × , so if we take the logarithms of both
y
, and A = In
)
5-12
y ax 3 bx 2
= + +
-intercept)
x
. The standard logarithmic
x
, the formula corresponds to
a
, the formula corresponds to
cx d
+
x
. The