query: Why is $dxdy=rdrd\theta$?
positive_passages.docid: 6843
positive_passages.text: Explain $\iint \mathrm dx\,\mathrm dy = \iint r \,\mathrm \,d\alpha\,\mathrm dr$
negative_passages.docid: 116612
negative_passages.text: Differential euqation for a pendulum: $ {d^2\alpha \over dt^2} + {g \over L} \cdot \alpha = 0 $
negative_passages.docid: 108808
negative_passages.text: $x =r\cos \theta$ and $y = r\sin\theta$, determine $\frac{\partial r}{\partial x}$ and $\frac{\partial \theta}{\partial x}$
negative_passages.docid: 98913
negative_passages.text: Sign in $\Delta U= -\int\vec{F}\cdot d\vec{l}$
negative_passages.docid: 16713
negative_passages.text: Product of an exponential function of IDD variables
negative_passages.docid: 155392
negative_passages.text: When deriving $d\sin\theta=n\lambda$ are the light rays approximately parallel or actually parallel?
negative_passages.docid: 66539
negative_passages.text: Why is the determinant the volume of a parallelepiped in any dimensions?
negative_passages.docid: 2676
negative_passages.text: Finding $\frac {d(\tan \theta)}{d\theta}$
negative_passages.docid: 54099
negative_passages.text: What are the eigenvalues of $\operatorname{ad}x$?
negative_passages.docid: 8408
negative_passages.text: What is $dx$ in integration?
negative_passages.docid: 53640
negative_passages.text: Equality of mixed partial derivatives
negative_passages.docid: 133756
negative_passages.text: Geometric interpretation of $\det(A^T) = \det(A)$
negative_passages.docid: 8711
negative_passages.text: Problems in the relation $a=v\frac{\mathrm{d}v}{\mathrm{d}x}$
negative_passages.docid: 78828
negative_passages.text: Intuitive explanation for density of transformed variable?
negative_passages.docid: 81973
negative_passages.text: Definition of $d (P (x ,y )dx)$
negative_passages.docid: 16550
negative_passages.text: Is $ d(X) \le s(X)? $
negative_passages.docid: 885
negative_passages.text: Why is the 2nd derivative written as $\frac{\mathrm d^2y}{\mathrm dx^2}$?