Vietnam High School Math Grade 12: Elon Musk had developed the rockets that could allow to return

Elon Musk had developed the rockets that could allow to return back the rocket launch station
There are 2 scenarios below.Find the rate of change of the angle of audience
. Let a is the rate of change (rad/km) after launching and b is the rate of change (rad/km) before going back the station
Find a^2+b (Round the final result by one decimal place)

#HighSchoolMath
#Grade12
#ApplicationOfDerivative
#Derivative