dA in polar coordinates using total differentials
6843
Explain $\iint \mathrm dx\,\mathrm dy = \iint r \,\mathrm \,d\alpha\,\mathrm dr$
36751
Plotting an implicit polar equation
30382
Integrate full derivative
118072
Division of differential equations
105626
Compute $\iint\limits_R\frac{y}{x+y^2}dA$ where $R=[0,1]\times[1,2]$
158876
Computing with matrix differential operators
75168
Exact Differentials
116612
Differential euqation for a pendulum: $ {d^2\alpha \over dt^2} + {g \over L} \cdot \alpha = 0 $
152062
Find a function that makes this differential form exact
17267
Interchanging the order of differentiation and summation
6888
How to implement Einstein summation convention with differential operators
51170
Evaluation of Differentiation and Integration
36128
Using differentiation for computing $\int_{0}^{1}\frac{\arctan(ax)}{x\sqrt{1-x^2}}\,dx$
93543
Can I switch to polar coordinates if my function has complex poles?
56275
Vector derivative w.r.t its transpose $\frac{d(Ax)}{d(x^T)}$
41264
By changing to polar coordinates, calculate the integral.
149913
Evaluate $\iint dy\,dx;\frac{\pi}{4}\leq\theta \leq\frac{3\pi}{4};0\leq r\leq2$