query: Proving $dx.dy = r.drd\theta$ using x and y
positive_passages.docid: 153158
positive_passages.text: how to get $dx\; dy=r\;dr\;d\theta$
negative_passages.docid: 81671
negative_passages.text: Proof of identity $\sqrt {xy} = \sqrt x \sqrt y$ for $x,y \in \mathbb R^+$
negative_passages.docid: 6843
negative_passages.text: Explain $\iint \mathrm dx\,\mathrm dy = \iint r \,\mathrm \,d\alpha\,\mathrm dr$
negative_passages.docid: 54512
negative_passages.text: How do I prove: $\cos (\theta + 90^\circ) \equiv - \sin \theta $
negative_passages.docid: 131357
negative_passages.text: Prove that $f(x,y)=xy$ is differentiable using the definition
negative_passages.docid: 131769
negative_passages.text: How to derive this second derivative using the quotient rule?
negative_passages.docid: 60761
negative_passages.text: Proof: $\cos^p (\theta) \le \cos(p\theta)$
negative_passages.docid: 108995
negative_passages.text: Prove $|e^{i\theta} -1| \leq |\theta|$
negative_passages.docid: 152293
negative_passages.text: Solution of $y''+xy=0$
negative_passages.docid: 115712
negative_passages.text: Application of Derivatives rigorous proof
negative_passages.docid: 157432
negative_passages.text: How to use the Mean Value Theorem to prove the following statement:
negative_passages.docid: 2676
negative_passages.text: Finding $\frac {d(\tan \theta)}{d\theta}$
negative_passages.docid: 101394
negative_passages.text: Please explain the logic behind $d(xy) = y(dx) + x(dy)$
negative_passages.docid: 81973
negative_passages.text: Definition of $d (P (x ,y )dx)$
negative_passages.docid: 73073
negative_passages.text: Differentiating $y=x^{2}$
negative_passages.docid: 49408
negative_passages.text: Proof of the derivative of ln(x)
negative_passages.docid: 40549
negative_passages.text: How to proof the the derivative of $x^2$ is $2x$?