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(Solved): (1 point) Let l be the length of a diagonal of a rectangle whose sides have lengths x and y, and as ...
(1 point) Let
lbe the length of a diagonal of a rectangle whose sides have lengths
xand
y, and assume that
xand
yvary with time. If
xincreases at a constant rate of
(1)/(9)f(t)/(s)and
ydecreases at a constant rate of
(1)/(4)f(t)/(s), how fast is the size of the diagonal changing when
x=1ft. and
y=3ft? Answer:
