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Published byGeraldine Garrett Modified over 8 years ago
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Chapter 12 3-D functions For an animation of this topic visit: http://www.math.umn.edu/~nykamp/m2374/readings/lineparam/
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Vector valued functions
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This section could be titled graphs of 1 dimensional objects in 3 dimensional space Consider the graph. What would this graph look like? Sketch the curve. r(t) = cos(t)i + sin(t) j + (t)k
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For an animation of the 3-D graphs visit http://www.math.umn.edu/~nykamp/m2374/r eadings/paramsurf/
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Example 3
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Example 3 solution
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Example 4
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Example 4 solution
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Example 5
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Problem 60 Sketch the curve represented by the intersection of the surfaces. Then represent the curve by a vector valued function.
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Problem 60 solution 4 = (2cost) 2 + y 2 ____________ y = + √4 – 4 cos 2 t = 2 sint x = 2 cost y = 2 sint z = 4 OR r(t) = 2 cost i + 2 sint j + 4 k
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All of the vector formulas that we learned in Calc BC can be expanded into 3 Dimensions see page 846, 851,869,870 and page 859 to see how the 2 D formulas can be expanded
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Find the error in this problem if there is one:
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