Use Any Program to graph the curve, please also provide the source code. Thanks!!

z(t) the amount of oxygen still required at time t, in (mg/L) -k' = the deoxygenation constant, in day-1. depends on the type of waste, the temperature, the stream velocity... The rate of change of z over time is proportional to k': 2(t) = Loe-kit Lo : the ultimate carbonaceous oxygen demand (mg/L), or the amount of oxygen needed to degrade the carbonaceous organic material in the wastewater at the point where the effluent first enters into and mixes with the stream d/dt D(t)=k-1^, zit)-k-2" D(t) Given LO = 30 (mg/L), DO = 1 (mg/L), k1' = 0.3 (1/day), k2' = 0.4 (1/day), ds = 10 (mg/L) and the solutions for z(t) and D(t) in Chapter 4 Please draw the Dissolved Oxygen Sag Curve and the curves of z(t) and Dit) as a function of time (day). The source code or data for your figure has to be turned in, too] 1 (e-kit-e k2- k1