Determine the dynamic equation for the rate of change of depth having bed slope S0 and slope of total energy line Sf.

\(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{QT}{gA^2}}\)

\(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA^2}}\)

\(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA^3}}\)

\(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA}}\)

Determine the dynamic equation for the rate of change of depth having

1.	Determine the dynamic equation for the rate of change of depth having bed slope S0 and slope of total energy line Sf.
A.	\(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{QT}{gA^2}}\)
B.	\(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA^2}}\)
C.	\(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA^3}}\)
D.	\(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA}}\)
Answer» D.