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1.
Letters, numbers, and/or symbols that seemingly appear out of no where in relation to given mathematical context.
voodoo math:
Find the equation of the tangent plane to the surface x^2z-y^3z^5+xy=9 at the point P=(1,2,-1).
answer:
Tangent plane at P is z+1=1/3(y-2) or equivalently y-3z=5
by BR14N1UM February 18, 2013
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