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Hello how does one apply the Taylor polynomials in a function of three variables?

If we consider the function $f: \mathbb{R}^3$ to $\mathbb{R}$ with $(x_1, x_2, x_3)$ mapped to $\sin(x^2_1) + \exp(x_2) + \cos(x_1x_3)$.

How can one calculate the Taylor polynomials of order one, two and three evaluated at the point $x = 0$?

Can someone please give me an idea as to how one tackles it.

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