Exponential Forms:

In engineering practice exponential dependence of variables are quite common. A typical instance is y = bx^m. On a log-log plot the slope of the straight line through the points is m and the intercept at x = 1 describe b. A more general representation is

                          y = b + a x^m.

The steps involved in the calculation of a, b and m are following :

 (i)  Calculate the value of b.

(ii)  Assess m by a log-log plot of y - b versus x.

(iii) By using m from step (ii) plot y versus xm.

(iv) The resulting curve must be a straight line with a slope a and an intercept b (more correct value).

 (v) By using this b repeat from step (ii).