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6th Edition

Stewart + 5 others

Publisher: Cengage Learning

ISBN: 9780840068071

Chapter 1.9, Problem 9E

To determine

**To graph**: The quadratic equation

Expert Solution

**Given information**:

The quadratic equation

**Graph**:

The graph of the quadratic equation

Consider the quadratic equation,

Rewrite the given equation:

Now put the values of

Substitute the value of

The value of

Substitute the value of

The value of

Substitute the value of

The value of

Substitute the value of

Substitute the value of

The value of

Substitute the value of

The value of

Substitute the value of

The value of

When the value of

Same as the value of

The value of

The value of

The value of

The value of

The value of

Observe that as the value of

Same as the value of

Steps to plot the graph of the equation

Step 1: Press

Step 2: Use the down arrow key to reach

Step 3: Press

Step 4: Press

Step 5: Enter the function

Step 6: Press

For better view of graph.

Step 8: Press

The result obtained on the screen is provided below,

**Interpretation**:

The equation of the function

The equation has a wave formed graph.

The

Recall that the graphical approach to solve the equation simultaneously is observe the point where the graph of equation

Therefore, the equation

a.When the

Steps to plot the graph of the equation

Step 1: Press

Step 2: Use the down arrow key to reach

Step 3: Press

Step 4: Press

Step 5: Enter the function

Step 6: Press

For better view of graph.

Step 8: Press

The result obtained on the screen is provided below,

This window is not perfect viewing window.

b.

When the

Steps to plot the graph of the equation

Step 1: Press

Step 2: Use the down arrow key to reach

Step 3: Press

Step 4: Press

Step 5: Enter the function

Step 6: Press

For better view of graph.

Step 8: Press

The result obtained on the screen is provided below,

This window is not a perfect viewing window.

c.

When the

Step 1: Press

Step 2: Use the down arrow key to reach

Step 3: Press

Step 4: Press

Step 5: Enter the function

Step 6: Press

For better view of graph.

Step 8: Press

The result obtained on the screen is provided below,

This is the perfect viewing window.

d.

When the

Step 1: Press

Step 2: Use the down arrow key to reach

Step 3: Press

Step 4: Press

Step 5: Enter the function

Step 6: Press

For better view of graph.

Step 8: Press

The result obtained on the screen is provided below,

This window has large view, in this the graph points are not clear.

So the perfect viewing window of the graph

The perfect viewing window is