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Chapter 7: Q28. (page 350)

Find p4andp-2 for the function px=12x4-2x2+4.

Short Answer

Expert verified

The value of p4=100andp-2=4.

Step by step solution

01

Step 1. Write down the given information.

The given function is px=12x4-2x2+4.

02

Step 2. Calculation.

Evaluating p4andp-2 by plugging x=4andx=-2 in given function px=12x4-2x2+4.

px=12x4鈭�2x2+4....Givenp4=1244鈭�242+4=100Now,p鈭�2=12鈭�24鈭�2鈭�22+4=4

03

Step 3. Conclusion.

The value of p4=100andp-2=4.

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Most popular questions from this chapter

The power generated by a windmill is a function of the speed wind. The approximate power is given by the function Ps=s31000, where s represents the speed of the wind in kilometer per hour. Find the units of power Ps generated by the windmill when the wind speed is 18 kilometers per hour.

For each graph,

a. Describe the end behaviour.

b. Determine whether it represents an odd-degree or an even-degree polynomial function, and

c. state the number of real zeros.

Complete each of the following.

  1. Graph each function by making a table of values.
  2. Determine consecutive values of x between which each real zero is located.
  3. Estimate the x-coordinate at which the relative maxima and relative minima occur.

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If px=3x2-2x+5andrx=x3+x+1 then find 4pa.

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