Faltaria un commit

README-en.md

@@ -51,7 +51,7 @@ Before you get to the laboratory you should have:
 
 ## Functions
 
-In mathematics, a function $$f$$ is a rule that is used to assign to each element $$x$$ from a set called *domain*, one (and only one) element $$y$$ from a set called *range*. This rule is commonly represented with an equation, $$y=f(x)$$. The variable $$x$$ is the parameter of the function and the variable $$y$$ will contain the result of the function. A function can have more than one parameter, but only one result. For example, a  function can have the form $$y=f(x_1,x_2)$$ where there are two parameters, and for each pair $$(a,b)$$ that is used as an argument in the function and the function will have only one value of $$y=f(a,b)$$. The domain of the function tells us the type of value that the parameter should have and the range tells us the value that the returned result will have.
+In mathematics, a function $$f$$ is a rule that is used to assign to each element $$x$$ from a set called *domain*, one (and only one) element $$y$$ from a set called *range*. This rule is commonly represented with an equation, $$y=f(x)$$. The variable $$x$$ is the parameter of the function and the variable $$y$$ will contain the result of the function. A function can have more than one parameter, but only one result. For example, a function can have the form $$y=f(x_1,x_2)$$ where there are two parameters, and for each pair $$(a,b)$$ that is used as an argument in the function, the function will have only one value of $$y=f(a,b)$$. The domain of the function tells us the type of value that the parameter should have and the range tells us the value that the returned result will have.
 
 Functions in programming languages are similar. A function has a series of instructions that take the assigned values as parameters and perform a certain task. In C++ and other programming languages, functions return only one result, as it happens in mathematics. The only difference is that a *programming* function could possibly not return any value (in this case the function is declared as `void`). If the function will return a value, we use the instruction `return`. As in math that you need to specify the domain and range, in programming you need to specify the types of values that the function's parameters and result will have; this is done when declaring the function.
 
@@ -307,7 +307,7 @@ In the introduction to the topic of functions you saw that in mathematics and in
             wCircleR5.AddPointToGraph(x,y);
         }
 
-    After the function call, each ordered pair $$(x,y)$$ is added to the circle’s graph by the member function `AddPointToGraph(x,y)`. After the cycle, the member function `Plot()` is called, which draws the points, and the member function `show()`, which displays the graph. The *members functions* are functions that allow use to work with and object’s data. Notice that each one of the member functions is written after `wCircleR5`, followed by a period. In an upcoming laboratory experience you will learn more about objects, and practice how to create them and invoke their method functions.
+    After the function call, each ordered pair $$(x,y)$$ is added to the circle’s graph by the member function `AddPointToGraph(x,y)`. After the cycle, the member function `Plot()` is called, which draws the points, and the member function `show()`, which displays the graph. The *member functions* are functions that allow us to work with an object’s data. Notice that each one of the member functions is written after `wCircleR5`, followed by a period. In an upcoming laboratory experience you will learn more about objects, and practice how to create them and invoke their method functions.
 
     The `circle` function implemented in the program is very restrictive since it always calculates the values for the coordinates $$x$$ and $$y$$ of the same circle: the circle with center in the origin and radius 5.