A curve is defined by the equation a)Find the gradient at (2,1) a)Workings b) Show that the x-cordinate of any stationary point of this curve satisfies the equation b) Workings now what? :S
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so you have 2 - 2xy = 0 from which y =1/x Plug this into the original equation:
isnt
From What is 0 * (x^2 +3*y^2) ?
Gosh you make me feel so stupid :{
We all have our moments -- I've spent hours on pblms because of simple mistakes Don't forget your interpretation of the problem and mechanics were excellent.
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