Question about SoftMath Algebrator - Algebra Homework Solver (689076614429)

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If the parabola has its concavity turned downward and it maximum value is lower than 0 then the value of the functions are always negative (never reach 0).

Similarly, if the parabola has it concavity turned upward, and its minimum value is positive, then all the values of the functions are positive (never reach zero). **Thus if y is never equal to zero the function has no x intercepts**.

The concavity is called by some people the mouth.

Posted on Oct 13, 2013

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Posted on Jan 02, 2017

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The 1/2 coefficient controls how wide the parabola is. A smaller number (ex: a fraction) creates a wider opening in the parabola, whereas a larger number (ex: 4) creates a more narrow parabola.

Jun 12, 2013 | Office Equipment & Supplies

Follow these steps: graph the parabola and after that **2nd** then **CALC** keypad. To find extreme value of the function select **3: min** or **4: max** options. Select the function and set left bound, right bound(using left and right arrows) by pressing **ENTER**. You can see images bellow for all these steps for the **y=-2x^2+5x+3**

1. step: graphing parabola

2. step: left or lower bound

3. step: right or upper bound

4.step: extreme value of the function

2. step: left or lower bound

3. step: right or upper bound

4.step: extreme value of the function

Mar 08, 2012 | Texas Instruments TI84PLUS Slvr Viewscreen...

Follow these steps: graph the parabola and after that **2nd** then **CALC** keypad. To find extreme value of the function select **3: min** or **4: max** options. Select the function and set left bound, right bound(using left and right arrows) by pressing **ENTER**. You can see images bellow for all these steps for the **y=-2x^2+5x+3**

1. step: graphing parabola

2. step: left or lower bound

3. step: right or upper bound

4.step: extreme value of the function

2. step: left or lower bound

3. step: right or upper bound

4.step: extreme value of the function

Mar 08, 2012 | Texas Instruments TI-84 Plus Silver...

To draw a graph, it helps if you know approximately where it is going to show up so that you can set up a window.

Try this:

Press the [Y=] button

Enter the following equation: 5*x^2-5*x (five x-squared minus five times x) by pressing the following calculator keys:

5 X (times) x^2 (x squared key) - (minus) 5 X (times) x (key labled x,t,n) in between the ALPHA and STAT keys

now press the zoom key and select #6 - ZStandard (this will give you a standard zoom)

You should see a parabola drawn on the screen.

If you enter in some equation and do not see it on the screen, you can try zooming out (zoom key) or setting up your display window, using the window key.

This is where it helps to know where your x and / or y intercepts are.

From there, you can use trace to move around the graph, 2nd+graph (table) to see your x and y intercepts.

Try this:

Press the [Y=] button

Enter the following equation: 5*x^2-5*x (five x-squared minus five times x) by pressing the following calculator keys:

5 X (times) x^2 (x squared key) - (minus) 5 X (times) x (key labled x,t,n) in between the ALPHA and STAT keys

now press the zoom key and select #6 - ZStandard (this will give you a standard zoom)

You should see a parabola drawn on the screen.

If you enter in some equation and do not see it on the screen, you can try zooming out (zoom key) or setting up your display window, using the window key.

This is where it helps to know where your x and / or y intercepts are.

From there, you can use trace to move around the graph, 2nd+graph (table) to see your x and y intercepts.

Dec 22, 2010 | Texas Instruments TI-83 Plus Calculator

Parabolas

Open Y= editor and type in the two functions

The calculaus functions are accessible by pressing [2nd][TRACE] to open the CALCulate menu options. For the gradient (I think you mean the derivative) use option 6:dy/dx. But first choose the point where you want it calculated (use cursor to move along the curve) and press ENTER. The value of the deivative will be calculated at the chosen point.

The vertex of the parabolas are maxima. Thus you must use option 4:maximum

You will be prompted for a left bound. Move cursor to the left of the maximum (not too far) and press [ENTER]. A fat arrow is displayed on the graph that shows the left limit of the interval. You will be prompted for a right bound. Move cursor along the curve to the right of the the vertex. Press ENTER. A seconf fat arrow will be displayed to show the right limit of the interval.

You will be prompted for a guess of the maximum. Move cursor newar the max or enter a numerical value and press ENTER.

The location of the vertex is displayed (X and Y values)

I have no idea what you mean by the equation of symmetry

Intercept.

Open Y= editor and type in the two functions

The calculaus functions are accessible by pressing [2nd][TRACE] to open the CALCulate menu options. For the gradient (I think you mean the derivative) use option 6:dy/dx. But first choose the point where you want it calculated (use cursor to move along the curve) and press ENTER. The value of the deivative will be calculated at the chosen point.

The vertex of the parabolas are maxima. Thus you must use option 4:maximum

You will be prompted for a left bound. Move cursor to the left of the maximum (not too far) and press [ENTER]. A fat arrow is displayed on the graph that shows the left limit of the interval. You will be prompted for a right bound. Move cursor along the curve to the right of the the vertex. Press ENTER. A seconf fat arrow will be displayed to show the right limit of the interval.

You will be prompted for a guess of the maximum. Move cursor newar the max or enter a numerical value and press ENTER.

The location of the vertex is displayed (X and Y values)

I have no idea what you mean by the equation of symmetry

Intercept.

May 02, 2010 | Texas Instruments TI-83 Plus Calculator

Parabolas are forms of the base equation X^2. So press the [Y=] key, and then type in the variation of x squared that you want

May 11, 2009 | Texas Instruments TI-83 Plus Calculator

Parabolas are forms of X^2. Go to [Y=], then put in the formula of the parabola that you want.

May 07, 2009 | Texas Instruments TI-83 Plus Calculator

V (2,0) and Focus (2,2)

since the focus is 2 units above the vertex, the parabola opens upward

vertex (h,k)

a is the focal length (distance between the vertex and the focus)

a = 2

(2 units above the vertex)

(x-h)^2 = 4a (y-k)

(x-2)^2 = 4(2) (y-0)

x^2 - 4x + 4 = 8 (y)

x^2 - 4x + 4 = 8y

x^2 - 4x - 8y + 4 = 0

**Answer: "(x-2)^2 = 8 (y)" or in expanded form "x^2 - 4x - 8y +4"

since the focus is 2 units above the vertex, the parabola opens upward

vertex (h,k)

a is the focal length (distance between the vertex and the focus)

a = 2

(2 units above the vertex)

(x-h)^2 = 4a (y-k)

(x-2)^2 = 4(2) (y-0)

x^2 - 4x + 4 = 8 (y)

x^2 - 4x + 4 = 8y

x^2 - 4x - 8y + 4 = 0

**Answer: "(x-2)^2 = 8 (y)" or in expanded form "x^2 - 4x - 8y +4"

Nov 18, 2008 | Super Tutor Trigonometry (ESDTRIG) for PC

(y - k)2 = 4a(x - h)

Mar 09, 2008 | Microsoft Windows XP Professional With...

See carefully captured images below

Oct 19, 2007 | Texas Instruments TI-84 Plus Silver...

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