| Recent Answers from David Hemmer |
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2008-10-08 Can this be solved?: no it can't. Consider the function: f(t)=1/t + 1/t^2 +1/t^3 + 1/t^4 +1/t^5 You are aksing if the function can be solved for t. At a minimum this would require the function to be invertible. However:...
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2008-10-07 quadratic funtions: The x axis is y=0. If you look at the quadratic formula you see a plus or minus the square root of b^2-4ac. So when b^2-4ac is postive there are two distinct real roots. If your example b^2-4ac=4-24k...
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2008-10-06 linear transformations: The linear map given by your matrix A is just a rotation around the origin ccwise of 60 degrees. The matrix B is the shear transformation described in part b of your question. Just look at what happens...
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2008-10-02 Permutation of increasing numbers: Well I hope I understand the question. So for you want P numbers in a row, nondecreasing and all in the set 1, 2, 3, ..., N. So this isn't really a question about permutations, you want the number of...
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2008-06-30 bearings and azimuths: This should be quite easy, see http://academic.brooklyn.cuny.edu/geology/leveson/core/linksa/comp.html for a reference. The azimuth just tells you were on the compass you are, starting at 0 degrees...
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