For the sum, find the number of terms, the first term, and the last term. Then evaluate the
series. If necessary, round to 1 decimal place. If
your answer includes a negative, enter it like: -2,
etc.
Σ" (20 – η)
Number of terms:

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.