Homework Help: Calculus

Posted by Stephanie on Sunday, November 2, 2008 at 12:52pm.

the curve: (x)(y^2)-(x^3)(y)=6

(dy/dx)=(3(x^2)y-(y^2))/(2xy-(x^3))

a) find all points on the curve whose x-coordinate is 1 and write an equation for the tangent line of each of these points

b)find the x-coordinate of each point on the curve where the tangent line is vertical

Calculus - drwls, Sunday, November 2, 2008 at 1:33pm
a) If x = 1, y^2 -y -6 = 0
(y-3)(y+2) - 0
y = 3 or -2

b) Find the points where dy/dx = infinity

Those would be the places where the denominator of dy/dx = 0. x=0 is one such point. Any point where x^2 = 2y would be another, if there is such a point on the curve.

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