We will say that a function is increasing when, as the value of the independent variable increases, the value of the function increases.
We will say that a function is increasing when, as the value of the independent variable increases, the value of the function increases.
In what domain does the function increase?
For example
let's assume we have two elements , which we will call and , where the following is true: , that is, is located to the right of .
The function is increasing when and also .
The function can be increasing in intervals or can be continuous throughout its domain.
If you are interested in this article, you might also be interested in the following articles:
Graphical representation of a function
Algebraic representation of a function
Assignment of numerical value in a function
Intervals of increase and decrease of a function
In the blog of Tutorela you will find a variety of articles with interesting explanations about mathematics
Assignment
Find the increasing area of the function
Solution
Solve the equation using the shortcut multiplication formula
From this, the data we have are:
Find the vertex using the formula
Vertex point is
From this we know that:
And therefore the function is maximum
The function is increasing in the area of
Answer
In what domain is the function negative?
In what domain is the function increasing?
In what domain does the function increase?
Assignment
Given the linear function in the graph.
When is the function positive?
Solution
The function is positive when it is above the axis:
Intersection point with the axis: is
According to the graph the function is positive
therefore
Answer
Assignment
Find the increasing area of the function
Solution
Solve the equation using the shortcut multiplication formula
From this, the data we have are:
Find the vertex by the formula
The vertex point is
From this we know that:
Therefore the function is maximum
The function is increasing in the area of
Answer
In what interval is the function increasing?
Purple line: \( x=0.6 \)
In what domain does the function increase?
Green line:
\( x=-0.8 \)
In which interval does the function decrease?
Red line: \( x=0.65 \)
Assignment
Find the increasing area of the function
Solution
Solve the equation using the shortcut multiplication formula
From this, the data we have are:
Find the vertex using the formula
The vertex point
From this we know that
Therefore, the function is maximum
The function is increasing from
Answer
Assignment
Find the increasing area of the function
Solution
Solve the equation using the shortcut multiplication formula
From this, the data we have are:
Find the vertex by the formula
Now replace in the given function
The vertex point is
From this we know that:
Therefore, the function is minimum
The function increases in the area of
Answer
In which interval does the function decrease?
Red line: \( x=1.3 \)
In what domain does the function increase?
Black line: \( x=1.1 \)
Determine the domain of the following function:
The function describes a student's grades throughout the year.
Determine which domain corresponds to the function described below:
The function represents the amount of fuel in a car's tank according to the distance traveled by the car.
According to the definition, the amount of fuel in the car's tank will always decrease, since during the trip the car consumes fuel in order to travel.
Therefore, the domain that is suitable for this function is - always decreasing.
Always decreasing
Choose the graph that best describes the following:
The acceleration of a ball (Y) after throwing it from a building as a function of time (X).
Since acceleration is dependent on time, it will be constant.
The force of gravity on Earth is constant, meaning the velocity of Earth's gravity is constant and therefore the graph will be straight.
The graph that appears in answer B satisfies this.
Choose the graph that best represents the following:
Temperature of lukewarm water (Y) after placing in the freezer as a function of time (X).
Since the freezing point of water is below 0, the temperature of the water must drop below 0.
The graph in answer B describes a decreasing function and therefore this is the correct answer.
Determine whether the function is increasing, decreasing, or constant. For each function check your answers with a graph or table.
For each number, multiply by.
The function is:
Let's start by assuming that x equals 0:
Now let's assume that x equals minus 1:
Now let's assume that x equals 1:
Now let's assume that x equals 2:
Let's plot all the points on the function graph:
We can see that the function we got is a decreasing function.
Decreasing
Determine whether the function is increasing, decreasing, or constant. For each function check your answers with a graph or table.
For each number, multiply by 0.
The function is:
Let's start by assuming that x equals 0:
Now let's assume that x equals 1:
Now let's assume that x equals -1:
Now let's assume that x equals 2:
Let's plot all the points on the function's graph:
We can see that the function we obtained is a constant function.
Constant