I can't figure out this question:
For what values of the constants A and B is the polynomial function $F(x,y) = (-5)x^5 + Ax^{3}y^{2} + Bxy^{4}$ harmonic in the whole $xy$-plane?
$A=?$ $B=?$
I can't figure out this question:
For what values of the constants A and B is the polynomial function $F(x,y) = (-5)x^5 + Ax^{3}y^{2} + Bxy^{4}$ harmonic in the whole $xy$-plane?
$A=?$ $B=?$