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Math problem

 
 
Levi
 
Reply Tue 17 Apr, 2007 03:06 pm
Show that if m is any real number, then there are exactly two lines of slope m that are tangent to the ellipse

(x^(2)/a^(2)) + (y^(2)/b^(2)) = 1

and their equations are

y=mx plus or minus sqrt(a^(2)m^(2) + b^(2))
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