Examples of quadratic in the following topics:
-
-
- Quadratic equations are second order polynomials, and have the form f(x)=ax2+bx+c.
- A quadratic function is of the general form:
- A quadratic equation is a specific case of a quadratic function, with the function set equal to zero:
- All quadratic functions both increase and decrease.
- Quadratic functions can be expressed in many different forms.
-
- The zeros of a quadratic equation can be found by solving the quadratic formula.
- The quadratic formula is one tool that can be used to find the roots of a quadratic equation.
- The quadratic formula can always be used to find the roots of a quadratic equation, regardless of whether the roots are real or complex, whole numbers or fractions, and so on.
- The first criterion must be satisfied to use the quadratic formula because conceptually, the formula gives the values of x where the quadratic function f(x)=ax2+bx+c=0; the roots of the quadratic function.
- Solve for the roots of a quadratic function by using the quadratic formula
-
- Completing the square is a method for solving quadratic equations, and involves putting the quadratic in the form 0=a(x−h)2+k.
- Along with factoring and using the quadratic formula, completing the square is a common method for solving quadratic equations.
- This quadratic is not a perfect square.
- However, it is possible to write the original quadratic as the sum of this square and a constant:
- Solve for the zeros of a quadratic function by completing the square
-
- The roots of a quadratic function can be found algebraically or graphically.
- Recall how the roots of quadratic functions can be found algebraically, using the quadratic formula (x=2a−b±√b2−4ac).
- Consider the quadratic function that is graphed below.
- Recall that the quadratic equation sets the quadratic expression equal to zero instead of f(x):
- Graph of the quadratic function f(x)=x2−x−2
-
- In algebra, parabolas are frequently encountered as graphs of quadratic functions, such as:
- Completing the square may be used to solve any quadratic equation.
- This can be applied to any quadratic equation.
- Graph with the quadratic equation .
- The graph of this quadratic equation is a parabola with x-intercepts at -1 and -5.
-
- Many equations with no odd-degree terms can be reduced to quadratics and solved with the same methods as quadratics.
- If a substitution can be made such that the higher order polynomial takes the form of a quadratic, any method for solving a quadratic equation can be applied.
- Consider a quadratic function with no odd-degree terms which has the form:
- With substitution, we were able to reduce a higher order polynomial into a quadratic equation.
- Use the quadratic formula to solve any equation in quadratic form
-
- where a, b and care the constants (a must be non-zero) from a quadratic polynomial.
- The discriminant Δ=b2−4ac is the portion of the quadratic formula under the square root.
- If Δ is equal to zero, the square root in the quadratic formula is zero:
- Since adding zero and subtracting zero in the quadratic equation lead to the same outcome, there is only one distinct root of the quadratic function.
- Graph of a polynomial with the quadratic function f(x)=x2−x−2.
-
- Two kinds of equations are linear and quadratic.
- A quadratic equation is a univariate polynomial equation of the second degree.
- A general quadratic equation can be written in the form:
- The term "quadratic" comes from quadratus, which is Latin for "square. " Quadratic equations can be solved by factoring, completing the square, graphing, Newton's method, and using the quadratic formula.
- Examples of graphed quadratic equations can be seen below.
-
- A quadratic function is a polynomial function of the form y=ax2+bx+c.
- Regardless of the format, the graph of a quadratic function is a parabola.
- Each coefficient in a quadratic function in standard form has an impact on the shape and placement of the function's graph.
- The coefficient a controls the speed of increase (or decrease) of the quadratic function from the vertex.
- Explain the meanings of the constants a, b, and c for a quadratic equation in standard form