- 17 3 Two Large Sound Speakers Are 80 M Apart But One Speaker Is 3 Times Larger And Louder Than The Other Speaker Yo 1 (222.47 KiB) Viewed 24 times
- 17 3 Two Large Sound Speakers Are 80 M Apart But One Speaker Is 3 Times Larger And Louder Than The Other Speaker Yo 2 (149.19 KiB) Viewed 24 times
17. 3 = Two large sound speakers are 80 m apart, but one speaker is 3 times larger and louder than the other speaker. You stand at various places between the speakers and S(x) ) = + + is used to optimize sound where x is your distance from the (80-x)2 smaller speaker. Determine S'(x), set it = 0 and solve for x. This will give you the value of x that optimizes S(x). Use FDT to prove whether this x value is a max or a min. Make a clear final statement. [7 marks] 702
Part D-Application. Show full solutions for full marks. [20 marks] 16. - The park across the street is to be treated to control the grub population. After t days of treatment the number of grubs is given by G(t) =+3 – 3t2 + 5t +11, where G is measured in thousands and t is measured in days after treatment Determine the lowest number of grubs in the first week and state the day that this occurs. Prove it is the lowest. [6 marks]