Question
Mathematics Question on Divergence theorem
If r=x1a^x1+x2a^x2+x3a^x3 and ∣r∣=r then div(r2∇(Inr))is
A
0
B
3
C
r
D
r2
Answer
3
Explanation
Solution
The correct answer is(B): 3
If r=x1a^x1+x2a^x2+x3a^x3 and ∣r∣=r then div(r2∇(Inr))is
0
3
r
r2
3
The correct answer is(B): 3