## Question

###### 16. Given a function y = 3x3 + 2x2 + x ~ 1,find the equation of the tangent line passing (1, 2)17. Given fence materials in 2600 yards to fence a rectangular area with one side bordering a straight river: What is the maximal area of the rectangular field it can border?

16. Given a function y = 3x3 + 2x2 + x ~ 1,find the equation of the tangent line passing (1, 2) 17. Given fence materials in 2600 yards to fence a rectangular area with one side bordering a straight river: What is the maximal area of the rectangular field it can border?

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