Final answer:
To sketch the graph of the given differential equation, we need to find the value of z(t) at different time points and plot them on a graph.
Step-by-step explanation:
To sketch the graph of the given differential equation, we need to find the value of z(t) at different time points.
Let's assume t = 0. Plugging in t = 0 into the equation, we get

Similarly, we can calculate the values of z(t) for different values of t and plot them on a graph to get the sketch of the graph.