Teaching HSSC TGT 2023 Mock Test (Latest Pattern) Engineering Mathematics Calculus Vector Calculus

The true statement is:

1
grad div f̅ = curl curl f̅ + ∇2 f̅  
2
grad curl f̅  = 0
3
curl div f̅  = 0​
4
\(\frac{1}{2}\) grad f2 = f̅ × curl f̅  + (f̅  · ∇) f̅ 
5
Not Attempted
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