For function f(x,y) to have maximum value at (a,b) is?
Posted: Thu Jul 14, 2022 9:29 am
a) rt – s2>0 and r<0
b) rt – s2>0 and r>0
c) rt – s2<0 and r<0
d) rt – s2>0 and r>0
b) rt – s2>0 and r>0
c) rt – s2<0 and r<0
d) rt – s2>0 and r>0