f(x)=9x^2-8x+4

find all the points on the graph f(x)=9x^2-8x+4 where the slope of the tangent line is 0
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1 Answer

y=9x^2 -8x +4

dy/dx=18x-8

18x-8=0 at x=+8/18=0.44444444444444444
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