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Ok, im having problem with an Implicit differentiation problem...

Two tangent lines to the hyperbola [tex] 9x^2 - y^2 =36 [/tex] intersect at the y-axis.

Use implicit differentiation to find the points of tangency. Ok so i implicitly differentiated this function and i came up with y'= 9x/y...now...Im not sure on how to find the points of tangency. Do i have to set the two equations equal to eachother and solve for y and x seperately? Please help, and help will be appreciated!! thanks

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# Homework Help: Use implicit differentiation to find the points of tangency

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