Will rate! Heavy work is not needed but please provide correct answer. Do not use Ai Gpt to solve the question it will be wrong i have already tried.

Let f be a scalar field (a function) and F a vector field. For each expression, decide first if it's meaningful, and if so, whether the result is a scalar field or vector field. curl (curl F) grad(div F) div F div(div F) curl (grad f) Vector Field Scalar Subn Not Meaningful