What is the value of Jacobian when transform from Cartesian coordinate to Cartesian coordinate?

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when $\int_{-\infty}^{\infty}f(x_1, x_2, \cdots x_n)dx_1dx_2\cdots dx_n=\int_{-\infty}^{\infty}g(y_1, y_2, \cdots y_n)\cdot|J_g|\cdot dy_1dy_2\cdots dy_n$, both $f$ and $g$ Cartesian coordinate but different position(rotated), will Jacobian matrix will be 1?