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docs/src/tutorials/nonlinear/rocket_control.jl

@@ -42,13 +42,13 @@ import Plots
 
 #  * Rate of ascent: $$\frac{d x_h}{dt} = x_v$$
 #  * Acceleration: $$\frac{d x_v}{dt} = \frac{u_t - D(x_h, x_v)}{x_m} - g(x_h)$$
-#  * Rate of mass loss: $$\frac{d m}{dt} = -\frac{u_t}{c}$$
+#  * Rate of mass loss: $$\frac{d x_m}{dt} = -\frac{u_t}{c}$$
 
 # where drag $D(x_h, x_v)$ is a function of altitude and velocity, gravity
 # $g(x_h)$ is a function of altitude, and $c$ is a constant.
 
 # These forces are defined as:
-
+#
 # $$D(x_h, x_v) = D_c \cdot x_v^2 \cdot e^{-h_c \left( \frac{x_h-x_h(0)}{x_h(0)} \right)}$$
 # and
 # $$g(x_h) = g_0 \cdot \left( \frac{x_h(0)}{x_h} \right)^2$$