Suppose you want purchase a new bicycle without using credit. The cost of the bike (includes sales tax) is $415. If you can save $75 per month, how many months will take
you to save up for the bike?

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