# Algebraic Test For Symmetry....2

• nycmathguy
In summary, an algebraic test for symmetry involves checking if a function is unchanged when its variables are replaced with their opposites. This can be done by substituting the negative of each variable for the original variables and simplifying the resulting expression. If the simplified expression is the same as the original function, then the function is symmetric. This test can be applied to both algebraic equations and graphs to determine symmetry.
nycmathguy
Homework Statement
Use the algebraic tests to check for
symmetry with respect to both axes and the origin.
Relevant Equations
n/a
Use the algebraic tests to check for
symmetry with respect to both axes and the origin.

y = x^4 - x^2 + 3

Let y = - y

-y = x^4 - x^2 + 3

y = (x^4 - x^2 + 3)/-1

y = -x^4 + x^2 - 3

Not symmetric with respect to the x-axis.

Let x = -x

y = (-x)^4 - (-x)^2 + 3

y = x^4 - x^2 + 3

Symmetric with respect to the y-axis.

Let x = -x and y = -y

-y = (-x)^4 - (-x)^2 + 3

y = (x^4 - x^2 + 3)/-1

y = -x^4 + x^2 - 3

Not symmetric with respect to the origin.

Delta2
Looks fine.

fresh_42 said:
Looks fine.
It feels good to be right.

fresh_42

## 1. What is an algebraic test for symmetry?

An algebraic test for symmetry is a method used to determine if a mathematical equation or function has symmetry. It involves manipulating the equation or function using algebraic operations to see if it remains unchanged or if it changes in a predictable way.

## 2. How do you perform an algebraic test for symmetry?

To perform an algebraic test for symmetry, you first need to identify the type of symmetry you are testing for (such as horizontal, vertical, or rotational symmetry). Then, you manipulate the equation or function using algebraic operations (such as replacing x with -x or y with -y) and see if the resulting equation or function is equivalent to the original one.

## 3. What is the purpose of an algebraic test for symmetry?

The purpose of an algebraic test for symmetry is to determine if a mathematical equation or function has any symmetrical properties. This can help in graphing and analyzing the equation or function, as well as in solving equations and finding solutions.

## 4. What are the benefits of using an algebraic test for symmetry?

Using an algebraic test for symmetry can help in understanding and visualizing mathematical equations and functions. It can also aid in solving equations and identifying patterns and relationships within the equation or function.

## 5. Can an algebraic test for symmetry be applied to all equations and functions?

Yes, an algebraic test for symmetry can be applied to all equations and functions, as long as they are algebraic in nature. It is particularly useful for polynomial and rational functions, but can also be applied to exponential, logarithmic, and trigonometric functions.

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