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Show that the derivative is $\\frac{dy}{dx} = \\tan\\left(t - \\frac{1}{4}\\pi\\right)$.
Mathematics 9709 · AS & A Level · Differentiation
Differentiation — practice question
A curve is described by the parametric equations $x = e^{-t}\\cos t$, $y = e^{-t}\\sin t$.
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