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How Do You Graph a Polynomial Function by Making a Table?

Graph f(x) = x5 - 2x3 + 1.

Summary

  1. f(x) is a function that is dependent on 'x'
  2. The f(x) column represents the values we get when we plug each x-value into f(x) = x5-2x3+1
  3. The values for f(x) are y-values
  4. The ordered pairs generated from -0.5 and 0.5 will give a better idea of how the graph looks near the origin

Notes

    1. Choose x-values to plug into f(x) to get an idea how the graph looks
    1. Choose x-values to plug into f(x) to get an idea how the graph looks
    2. Remember, f(x) = x5-2x3+1
    3. Let's choose -2, -1, 0, 1, and 2 for our x-values
    1. We picked the x-values of -2, -1, 0, 1, and 2
    2. Remember, f(x) = x5-2x3+1
    3. Don't forget that you have to raise the negative sign to the power too
    1. We found ordered pairs by plugging in x-values into f(x) = x5-2x3+1
    2. The ordered pairs are:
    3. (-2,-15)
    4. (-1,2)
    5. (0,1)
    6. (1,0)
    7. (2,17)
    1. Plotting the initial five points didn't give a clear enough picture
    2. We need to pick values that will help get us a better picture of what's going one between when x is -1 and 1
    3. Plot the point (-0.5,1.28125) on our graph
    4. Then, plot the point (0.5,0.78125) on the graph
    1. Connect the points that we just plotted to graph the function