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Graphing and TI-83 : Plotting a Graph an Calculating an Integral

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I need help with the TI-83. I dont want the problem solved, just need to be walked through the steps for inputting data into the TI-83 to mimic the graph as shown in the document. I have tried many ways and I keep getting the wrong graph. Thank You.

a) Graph x3 - 5x2 + 4x , marking x = 1,2,3,4,5

b) Use the graph and the area of interpretation of the definite integral to decide which of the five numbers

for n = 1,2,3,4,5

is largest. Which is smallest? How many of the numbers are positive? (Do not calculate integrals).

Please see the attached file for the fully formatted problems.

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