Announcements

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Announcements

• Test released, average 70
• Homework quiz on 3.1, 3.2, 3.3 posted
• No lab session Tuesday (Election Day)there will
  be a lab posted online to complete from anywhere,
  open for 10 days
• Another make up lab will be available before
  Thanksgiving, to remain up until the end of the
  semester

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HW
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HW
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Radical Functions
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Model Cost Function
 

• A company manufactures a quantity q of a product
  per month. They invest 2.3 million in capital
  towards technology (machinery, computers, etc.)
  and a fixed cost investment of 5.4 million.
  Data is collected on the cost for varying
  quantities q (in 100,000 units).
• Determine a model for cost.

 
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Cost Data
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Properties of Model

• Is the data increasing or decreasing?
• Cost increases as production increases
• Is the data concave up or concave down?
• Data is concave down

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Radical Functions

• Function of form
• where p(x) is a polynomial, integer ngt1
• If n is even, what is the domain of r(x)?
• If n is odd, what is the domain of r(x)?
• What is the concavity of a radical power function
  y axn when 0 lt n lt 1?

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Radical Function index
0ltnlt1
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Determining Radical Model
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Cost Model
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• Polynomial
• Radical
• Linear
• Absolute value

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Solving Radical Equations - Algebraic Method
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Double Radical Equation
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(No Transcript)
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Extraneous? (1) 2 (2) 142 (3) both (4) neither
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Linearization