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Finding Zeros and Max/ Mins on a Calculator

Finding Zeros and Max/ Mins on a Calculator. What is a zero?. An x intercept is the point where the graph crosses the x axis Also known as the root, or zero, or solution. How to find zeros. Go to y= Hit 2 nd trace Select 2: zero

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Finding Zeros and Max/ Mins on a Calculator

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  1. Finding Zeros and Max/Mins on a Calculator

  2. What is a zero? • An x intercept is the point where the graph crosses the x axis • Also known as the root, or zero, or solution

  3. How to find zeros • Go to y= • Hit 2nd trace • Select 2: zero • Select a point to the left of the intercept as the left bound. Hit enter • Select a point to the right of the intercept as the right bound. Hit enter • Hit enter again for the result

  4. Find the zeros • Y=x2-3x • Y=3x2-33x+72 • Y=-x2-9n-18

  5. At your seats…find the zeros • Y=7x2+35x-42 • Y=-x2-4x-4 • Y=x2-7x+12 • Y=x2+6n-16

  6. Finding Max/Min Values • How do we know the difference between a maximum and minimum?

  7. How to find max/mins • Go to y= • Hit 2nd trace • Select maximum or minimum • Select a point to the left of the max/min as the left bound. Hit enter • Select a point to the right of the max/min as the right bound. Hit enter • Hit enter again for the result

  8. Find the max/min • Y=x2-3x • Y=3x3-33x+72 • Y=-x2-9n-18

  9. At your seats…find the max or min • Y=7x2+35x-42 • Y=-x34x-4 • Y=x2-7x+12 • Y=x2+6n-16

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