document.write( "Question 1112000: Pls help. In what point of the graph of f(x) = 2x^3 -6x has/have its horizontal tangent line? Thankyou. \n" ); document.write( "
Algebra.Com's Answer #727018 by Alan3354(69443)\"\" \"About 
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In what point of the graph of f(x) = 2x^3 -6x has/have its horizontal tangent line?
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\n" ); document.write( "Where the 1st derivative = zero.
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