Hello Ernest D. I like the way you explained the concepts on previous work. I have four Vector Calculus questions all multiple choice, in some cases the answer carries over the next question..Thx AC

Sol: (18) Given that,
 
 
 
1
1
2
1 2 3
, 1 , 0 1
22
tt e

r t t t
t

    
Also

 
   
3 2 3 21 2 1 1 2 1
, 1, 1
1 1, 1 1t t
F x y x y y x
t e t t t e 
    
      

So,
        
 
 
            
 
     
1
13 2 3 21 1 2
1
1 13 2 22 1 1 12 2
1 2 3
. 1 1, 1 1 . , 1
22
1 21 1 3 3 3
. 1 2 1 1 2 1 1 1
2 2 2 22 2
t
t t
t
t t t
t e
F r t r t te t t...