HP -18C Owner's Manual page 105

Figure 6-5. Curve Fitting Models
Linear Curve Fit Exponential Curve Fit
...
y
y
y=A+Bx
y=Ae Bx
x x
Logarithmic Curve Fit Power Curve Fit
DIll
...
y
y
y = A+B In x
y=AXB
x
x
6: Running Total and Statistics Calculations 103