设参数方程{y=3t3+tx=t2−5\begin{cases}y = \sqrt{3t^3}+t\\x = t^2 - 5\end{cases}{y=3t3+tx=t2−5确定了函数y=y(x)y = y(x)y=y(x),则dydx=\dfrac{dy}{dx}=dxdy=( ).
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