Hello, how are you?

In this post I talk about some basic commands to create basic operations such as sub and superscipts, roots and vectors.

Remember that you need to import theamsmath andamssymb packages,here I give you a brief introduction of these packages

Operators

1. Basic Operations We can sum, substact, multiply and divide with+,-,\times or\cdot and\frac{a}{b}
2. Sub and Superscripts We create a superscript with{a}^{b} and a subscript with{a}_{b}.
   • Roots We create a root with\sqrt{a} or\sqrt[a]{b}
3. Over and Under-braces An over-brace with text is\overbrace{x+y}^{text} and an under-brace is\underbrace{a+b}_{text}
4. Vectors We create a vector with\vec{a} or\hat{a}

Let's create something with this

Produces

Wait! Do you remember that inthis post I told you that there was a difference betweeninline anddisplayed formulas, well

Produces

Did you noticed the difference? If not, in the fraction

Theinline formulas adapts the size of the operator to print it in the same line whiledisplayed formulas expands the size of the operations showing its real size :)

This is all for today. Thanks for reading

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Greetings :)