Answers created by Matthew B.

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• A box with an open to is to be constructed from a square piece of cardboard, 3 ft wide, by cutting out a square from each of the four corners and bending up the sides. find the largest volume that such a box can have?
  
• Find the equation of the tangent line to the curve at the given point?
  
• Find points on the curve y={2x^3+3x^2-12x+1} where the tangent is horizontal?