Determine The Coordinates Of The Points Where F(x)

MathProdigy7

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Determine the coordinates of the points where f(x)=(4x)/(1+x^2) has a horizontal tangent line.

 

Answer No.1

Anonymous

From: -
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Dy/dx =0 or, 4*(1+x^2)-4x*2x =0 or, 4=4x^2 So, x =1,-1 So, point is (1,2) (-1,-2)

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