Ononot — Let u = x^2 + y^2 where x = t + t^2 and y = \sin t. Find \fr

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Multivariable & Vectorhard

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Let $u = x^2 + y^2$ where $x = t + t^2$ and $y = \sin t$ . Find $\frac{du}{dt}$ at $t = 0$ .