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Basic Syntax
To write in latex in mathematical language you need a base. In this section you will find the basic commands to write the main operations. Below there is a list of the topics we will touch.

Fractions - \frac{}{}
A fraction is a way to express a quantity based on the division of an object in a certain number of parts of the same dimension. It is composed of a numerator, which represents the part respect to the total, represented by the denominator.
In order to write a fraction in LaTeX you have to use the command \frac{a}{b}, where a is the numerator and b is the denominator.
CODE
$$\frac{19+99}{7}$$

fractions
Exponentiations (Superscript) - a^{}
The exponentiations is an operation that associates to a pair of numbers a and n, called respectively base and exponent, the number given by the product of n factors equal to a. This function can also be used as superscript of something.
In LaTeX we write a^{b}, where a is the base and b the exponent.
CODE
$$8^{4}=4096$$

exponentiations
Subscripts - a_{}
Often in mathematics, as in other fields, the subscripts are used to indicate a certain value or a certain constant.
We write a_{b} in LaTeX, where a is the base number and b is the subscript.
CODE
$$n_{0}=0, n_{1}=1$$

subscripts
nth roots - \sqrt[]{}
An nth root of a number x, where n is usually assumed to be a positive integer, is a number r which, when raised to the power n yields x: rn = x, where n is the degree of the root.
In LaTeX the \sqrt{x} command allows you to write the square root of a number x. Instead if you want to write the nth root of any number you can use the command \sqrt[a]{b}, where a is the root degrees and b is the root number.
CODE
$$\sqrt[3]{7}+\sqrt[3]{2}$$

roots
Logarithms - \log_{}
The logarithm of a number in a certain base is the exponent to which the base must be elevated to obtain the same number.
We write \log_{a}b in LaTeX in order to indicate the logarithm to base a of b.
CODE
$$\log_{4}12$$

logarithms
Summations and Product - \sum_{}^{}, \prod_{}^{}
The summation is a mathematical symbol that shortens, in a synthetic notation, the sum of a certain set of addends. It is composed by the symbol Σ, the summation index, the two lower and higher limits and a function.
In LaTeX we write \sum_{b}^{x=a}f(k), that is, the summation for x ranging from a to b of f(k).

Similarly, the product is a symbol that shortens the multiplication of a number of factors into a synthetic notation. It is composed by the symbol Π, the product index, the two lower and higher limits and a function.
To build a product in LaTeX we write \prod_{b}^{x=a}f(k), which means the product for x ranging from a to b of f(k).
CODE
$$\sum_{x=0}^{7}x+3$$

summations and products
Limits - \lim_{}
The concept of limit serves to describe the course of a function as its subject approaches to a given value.
In LaTeX we write \lim_{a \to b} to say that the value of a is getting closer and closer to b. The command \to is used to build the arrow that leads a to b.
CODE
$$\lim_{x \to 10}$$

limits
Derivatives - \frac{\mathrm{d} }{\mathrm{d} x}
The derivative is the measure of how much the growth of a function changes as its argument changes.
We use this syntax in LaTeX: \frac{\mathrm{d} f}{\mathrm{d} x}, where f is the function that we want to derive.
CODE
$$\frac{\mathrm{d} y}{\mathrm{d} x} = y'$$

derivatives
Integrals - \int_{}^{}
The integral is an operator that, in the case of a function of a single variable, associates to the function the area under the graph within a given interval [a, b] in the domain.
There are two type of integrals: the undefided and the defined. In LaTeX we write the first as \int and the second as \int_{a}^{b}, where a is the beginning of the considered graph and b the end.
CODE
$$\int_{-10}^{10}7x+30$$

integrals
Exercises

1) Write the steps to find the hypotenuse length of a 4cm base right triangle and 3cm high by using the Pitagora Theorem.
Then, in a second line, multiply it by the logarithm of base 10 of 100.

$$\sqrt{4^{2}+3^{2}} = 5//
5 x \log_{10}100 = 10$$

2) Using a summation, write the sum of the first 5 numbers raised to the power of 3/2, starting with 1.

\sum_{5}^{x=1}x^{\frac{3}{2}} \cong 28.205