Determine the derivative of the given function by using two different methods ym +3 Part3: A rectangular rose garden will be surrounded by a brick wall on three sides and by a fence on the fourth side. The area of the garden will be 1000m². The cost of the brick wall is $192/m. The cost of the fencing is $ 48/m. calculate the dimensions of the garden so that the cost of the material will be as low as possible.