March 10th, 2010, 06:31 PM  #1 
Newbie Joined: Mar 2009 Posts: 13 Thanks: 0  Slope of a tangent
A quadratic function is defined by f( x )= x^2 + 2x + 3. A linear function is defined by g( x )=mx6. What value(s) of the slope of the line would make it a tangent to the parabola? No calculus allowed.

March 11th, 2010, 03:49 AM  #2 
Senior Member Joined: Feb 2009 From: Adelaide, Australia Posts: 1,519 Thanks: 3  Re: Slope of a tangent
The equation f(x) = g(x) must have exactly one solution for x.


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