# Taylor series

#### Petrus

##### Well-known member
Hello MHB,
I understand taylor series proof with one variable but how does it work with Two variabels? is it pretty much the same? The one I understand is

Taylor's theorem - Wikipedia, the free encyclopedia
Go to proofs Then it's the one under "Derivation for the integral form of the remainder"

Regards,
$$\displaystyle |\pi\rangle$$

#### Klaas van Aarsen

##### MHB Seeker
Staff member
Hello MHB,
I understand taylor series proof with one variable but how does it work with Two variabels? is it pretty much the same? The one I understand is

Taylor's theorem - Wikipedia, the free encyclopedia
Go to proofs Then it's the one under "Derivation for the integral form of the remainder"

Regards,
$$\displaystyle |\pi\rangle$$
Yep. It's pretty much the same.
Note that the symbol $D^\alpha f(\mathbb a)$ is a vector for $\alpha = 1$, a matrix for $\alpha = 2$, a 3-dimensional matrix for $\alpha = 3$, and so on.