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Hello, you can be sure I know spanish because it is my first language. Furthermore, I studied primary school and high school in spanish in Venezuela and I started studying Communication in a universit...

Let f(x) = x^3 - 6x^2 + 11x - 6.

Try x = 1：   f(1) = 1 - 6 + 11 - 6 = 0

So x - 1 is a factot of f(x).

Try x = 2：   f(2) = 8 - 24 + 22 -...

First, we need to recall 2 basic definitions of vector operations:

The dot product is defined on vectors u=[u₁, u₂,...u_n] and v...

The chain rule is used when you're trying to differentiate a complicated function, and it allows you to split up the function into easier ones. The trick is spotting where to split the function, and what ...

The immune system is made up of the Innate (or non-specific) immune responce and the acquired (or specific) immune responce. 

Imagine you live in your castle and it is your job to protect it. ...