Asked by: Weijie Nakul
science physics

What are the quadratic equation and quadratic function?

Last Updated: 25th February, 2020

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A quadratic function is a function of a single variable x, with a value y determined by a formula of the form: y = ax^2 + bx + c, where a, b and c are constants. On the other hand, an equation is a mathematical statement saying that something is equal to something else.

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Also, what is quadratic function formula?

A quadratic function is one of the form f(x) = ax2 + bx + c, where a, b, and c are numbers with a not equal to zero. The graph of a quadratic function is a curve called a parabola.

Beside above, what are the 3 forms of quadratic functions? While most of the ways to write the quadratic equation are redundant and useless, there are three forms that actually have unique uses. These three main forms that we graph parabolas from are called standard form, intercept form and vertex form.

Then, what is the quadratic formula and what is it used for?

As well as being a formula that yields the zeros of any parabola, the quadratic formula can also be used to identify the axis of symmetry of the parabola, and the number of real zeros the quadratic equation contains.

What is the vertex formula?

y = a(x – h)2 + k, where (h, k) is the vertex. in y = ax2 + bx + c (that is, both a's have exactly the same value). The sign on "a" tells you whether the quadratic opens up or opens down.

Related Question Answers

Kadir Maizi

Professional

What makes a problem quadratic?

In mathematics, a quadratic is a type of problem that deals with a variable multiplied by itself — an operation known as squaring. This language derives from the area of a square being its side length multiplied by itself. The word "quadratic" comes from quadratum, the Latin word for square.

Sahila Gebhart

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What are characteristics of quadratic functions?

Characteristics of Parabolas
The graph of a quadratic function is a U-shaped curve called a parabola. One important feature of the graph is that it has an extreme point, called the vertex. If the parabola opens up, the vertex represents the lowest point on the graph, or the minimum value of the quadratic function.

Svajunas Mihalsky

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What are the roots of an equation?

The roots of a function are the x-intercepts. By definition, the y-coordinate of points lying on the x-axis is zero. Therefore, to find the roots of a quadratic function, we set f (x) = 0, and solve the equation, ax2 + bx + c = 0.

Perfecto Veselago

Explainer

What is almighty formula?

It is one of d paramount methods of solving quadratic equation and mathematically expressed as:X=-b+or-the square root of b^2-4ac all divided by 2a.

Lucie Arbeo

Pundit

How do you write an equation for a parabola?

For parabolas that open either up or down, the standard form equation is (x - h)^2 = 4p(y - k). For parabolas that open sideways, the standard form equation is (y - k)^2 = 4p(x - h). The vertex or tip of our parabola is given by the point (h, k).

Nichita Raihelson

Pundit

Who created the quadratic formula?

At the end of the 16th Century the mathematical notation and symbolism was introduced by amateur-mathematician François Viète, in France. In 1637, when René Descartes published La Géométrie, modern Mathematics was born, and the quadratic formula has adopted the form we know today.

Maris Pepe

Pundit

What is quadratic equation examples?

Here are examples of quadratic equations in the standard form (ax² + bx + c = 0): 6x² + 11x - 35 = 0. 2x² - 4x - 2 = 0. -4x² - 7x +12 = 0. 20x² -15x - 10 = 0.

Numidia Alter

Teacher

How do you use the quadratic formula step by step?

Step 1: To use the quadratic formula, the equation must be equal to zero, so move the –4x back to the left hand side. Step 2: Identify a, b, and c and plug them into the quadratic formula. In this case a = 3, b = 4, and c = 8. Step 3: Use the order of operations to simplify the quadratic formula.

Atsushi Brunheta

Teacher

What are the 4 ways to solve a quadratic equation?

The four methods of solving a quadratic equation are factoring, using the square roots, completing the square and the quadratic formula.

Man Seibicke

Teacher

How do you find the Y intercept?

To find the y intercept using the equation of the line, plug in 0 for the x variable and solve for y. If the equation is written in the slope-intercept form, plug in the slope and the x and y coordinates for a point on the line to solve for y.

Ever Grady

Reviewer

Can Excel solve quadratic equations?

A quadratic equation can be solved by using the quadratic formula. You can also use Excel's Goal Seek feature to solve a quadratic equation.

Aldrin Fory

Reviewer

What jobs use the quadratic formula?

Careers That Use Quadratic Equations
  • Military and Law Enforcement. Quadratic equations are often used to describe the motion of objects that fly through the air.
  • Engineering. Engineers of all sorts use these equations.
  • Science.
  • Management and Clerical Work.
  • Agriculture.

Sardar Artazcoz

Reviewer

What is the B formula?

The Quadratic Formula is derived from the process of completing the square, and is formally stated as: The Quadratic Formula: For ax2 + bx + c = 0, the values of x which are the solutions of the equation are given by: x = − b ± b 2 − 4 a c 2 a x = dfrac{-b pmsqrt{b^2 - 4ac,}}{2a} x=2a−b±b2−4ac.

Franca Gelo

Reviewer

Why is the quadratic formula important?

The quadratic equation is used to find the curve on a Cartesian grid. It is primarily used to find the curve that objects take when they fly through the air. For example a softball, tennis ball, football, baseball, soccer ball, basketball, etc.

Grethe Barcelo

Supporter

What is the point of factoring?

Factoring is a common mathematical process used to break down the factors, or numbers, that multiply together to form another number. Some numbers have multiple factors. Factoring is useful in resolving various numbers-related problems.

Alona Santaeufemia

Beginner

What is the square root property?

Using the Square Root Property
In words, the square root property states that if we have an equation with a perfect square on one side and a number on the other side, then we can take the square root of both sides and add a plus or minus sign to the side with the number and solve the equation.