# Line integral

1. ### bartadam

41
I have the following line integral

$$\int_{t_{0}}^{t} dt' Y^{\mu}(x(t))\frac{\partial \phi(x(t))}{\partial x^{\mu}}$$

Can I take the partial derivative outside the integral given that $$\frac {\partial Y^{\mu}}{\partial x^{\mu}}=0$$?

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