that's better. See what you can do with (b) and (c), from the steps I used in your previous post.
Post your work if you get stuck.
The length / of a rectangle is decreasing at the rate of 3 cm/sec,
while its width w is increasing at the rate of 3 cm/sec. Find the
rates of change of (a) the area, (b) the perimeter, (c) the length of
one diagonal at the instant when l = 15 and w = 6.
1 answer
1 answer