Parabolic Function: Graph of y=ax^n

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This can be observed by comparing the graphs of y=x^2 and y=-x^2.In summary, the graph of the function y=ax^n can be obtained from the graph of y=x^n by changing the coefficient a. When a is positive, the graph becomes narrower as a increases and wider as a decreases. On the other hand, when a is negative, the graph is reflected about the x-axis, resulting in a downward pointing parabola. Through experimentation, a mathematical pattern can be observed to predict the graph's appearance at any a value.
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batballbat
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how can the graph of the function y=ax^n be obtained from the graph of y=x^n if a is positive?negative
 
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  • #2
If you graph two functions, y=x^2 and y=5x^2 you will notice the first graph appears "fatter" and the second graph is "skinnier".
As you increase the coefficient a the more narrow the graph becomes.
As you decrease the coefficient a the wider the graph becomes.
I would experiment with this concept until you notice a mathematical pattern by which you can predict the graph's appearance at any a.
 
  • #3
When a is negative, the graph is reflected about the x-axis. For example, the parabola y=-x^2 has the same shape as y=x^2, but is pointing down instead of up.
 

FAQ: Parabolic Function: Graph of y=ax^n

1. What is a parabolic function?

A parabolic function is a type of mathematical function that follows the form y = ax^n, where a is a constant and n is a positive integer. It is called "parabolic" because its graph takes the shape of a parabola, which is a U-shaped curve.

2. How do I graph a parabolic function?

To graph a parabolic function, you can plot a few points on a coordinate plane and then connect them with a smooth curve. Alternatively, you can use the equation y = ax^n to find the coordinates of the vertex (highest or lowest point) and a few other points on the graph, and then plot and connect those points.

3. What is the significance of the value of a in a parabolic function?

The value of a in a parabolic function determines the direction and shape of the graph. If a is positive, the graph will open upwards like a "smile" and if a is negative, the graph will open downwards like a "frown". The magnitude of a also affects the steepness of the curve.

4. Can a parabolic function have a negative exponent?

Yes, a parabolic function can have a negative exponent. In this case, the graph will still take the shape of a parabola, but it may be reflected across the x-axis (if n is odd) or across both the x-axis and y-axis (if n is even).

5. What are some real-life applications of parabolic functions?

Parabolic functions are commonly used to model the trajectory of objects in projectile motion, such as a ball being thrown or a rocket being launched. They are also used in engineering to design curved structures such as arches and bridges, and in economics to study the relationship between supply and demand.

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