What does the symbol dz represent in the expression fzdz?
The symbol dz represents an infinitesimal element along the curve or path C.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What does the symbol dz represent in the expression fzdz?

### Input: Not applicable

### Response:
The symbol dz represents an infinitesimal element along the curve or path C.<|im_end|>