In 1992, only 275 people owned cellphones in metropolis. each year, cell phone use has continuously grown by 82%. how many cellphone users were there in 2000?

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