Question

if u =1/r and r²=(x-a)²+(y-b)²+(z-c)²prove Uxx+Uyy+Uzz=0​

Answer 1

Answer:

1/r and r²=(x-a)²+(y-b)²+(z-c)²

Step-by-step explanation:

U = [1, 5] A={ x|x in N x^ 2 -6x+5=0} , A' =