The curve $$\(\mathbf{C}\)$$ has equation $$\(y=5 x^{3}-x^{2}-6 x+4\)$$ (a) Find $$\(\frac{\mathrm{d} y}{\mathrm{~d} x}\)$$ $$\[ \frac{\mathrm{d} y}{\mathrm{~d} x}= \]$$ (2) There are two points on the curve $$\(\mathbf{C}\)$$ at which the gradient of the curve is 2 (b) Find the $$\(x\)$$ coordinate of each of these two points. Show clear algebraic working. (4)

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