GATE ECE 2006 | Question: 2

Question

$\nabla \times \nabla \times \mathrm{P},$ where $\mathrm{P}$ is a vector, is equal to

• A. $\mathrm{P} \times \nabla \times \mathrm{P}-\nabla^{2} \mathrm{P}$
• B. $\nabla^{2} \text{P} +\nabla(\nabla \bullet \text{P})$
• C. $\nabla^{2} \mathrm{P}+\nabla \times \mathrm{P}$
• D. $\nabla(\nabla \bullet \mathrm{P})-\nabla^{2} \mathrm{P}$