Four new students have to be assigned a tutor. there are seven possible tutors and none of them will accept more than one student. in how many ways can the tutor assignment be done?

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