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**grad, curl , div operator got any meaning??**

∇x

**F**(t) same as the first derivative of

**F**with respect to t , or will get the gradient of

**F**which is normal to the

**F**?

∇ dot

**F**(t) , will get the scalar value of what??

lets say

**F**is force , then can anyone please give me the meaning of those operator on the vector mean?

∇x

**F**(t) will get the gradient of

**F**which is normal to the

**F**.

I think of this because in the stoke's theorem the ∇x

**F**(t) have to dot with

**n**, where

**n**should be the unit normal vector of the surface.

I am blur , please guide .

Thank you.