What is the area of a sector with a central angle of 4π3 radians and a diameter of 7.3

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

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.

Which expression is equal to (f+g)(x)?