What's b???

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#717

From: Black Orb
Date: Wed, 31 Jan 1996 00:00

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I can't seem to be able to solve for b

The function y=x^4+bx^2+8x+1 has a horizontal tangent and a point of
inflection for the same value of x.  Solve for b.

Take your best shot, I couldn't get the answer.

(A) b= -1  (B) b=4  (C) b=1  (D)  b=6  (E) b= -6

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Subject: What's b???
Date: 1996/01/31
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