กิน
th
Bev wrote these clues about her secret
number.
• The number has 5 hundreds.
. The tens digit is 1 less than 9.
. The number has more ones than tens.
What is the number? Circle the correct
A:589
B:598
C:959
D:590

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