Turkey bird or chicken bird

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis