How many natural numbers are there in 500²and501²

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

What is the equivalent fraction for the following fraction using 5 as the multiplier? 1/2

Find two numbers if their ratio is 4: 7 and their difference is 123.