Homework Help Forum: calculus

Posted by kaley on Monday, November 2, 2009 at 5:18pm.

find the points at which the graph of 4x^2 - 4x + 12y^2 -6y = 10 has a vertical and horizontal tangent line. For the vertical only solve for y and for the horizontal only solve for x. I got the deriviative to be: (8x-4)/(-24y + 6). For the horizontal, x = 1/2 For the vertical y = 1/4 I have to plug these into the original equation to get the points and solve for the rest of the equation but each time i do it, it doesn't turn out right. Can someone check over my work and show me how to finish the problem? Thanks

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