How to compute identity from symmetric difference?

Solve for $x, y \in \mathbb R$: $x^2+y^2=2x^2y^2$ and $(x+y)(1+xy)=4x^2y^2$

Approximate solution: factorial and exponentials

Find all roots of the equation :$(1+\frac{ix}n)^n = (1-\frac{ix}n)^n$

If $\sum a_n$ converges , then $a_n<1/n$ a.e?

De Rham cohomology of compact manifold minus one point

Calculate $\lim _{x \rightarrow 0} \frac{\int _{0}^{\sin x} \sqrt{\tan x} dx}{\int _{0}^{\tan x} \sqrt{\sin x} dx}$

Homotopy equivalence upper triangular matrices and torus

How can this system not be asymptotically stable?

Computing the matrix powers of a non-diagonalizable matrix

Find limit in use of integrals

Does the unit of measure matter when you are solving for the diameter of a circumference?

Solve $\sqrt{1 + \sqrt{1-x^{2}}}\left(\sqrt{(1+x)^{3}} + \sqrt{(1-x)^{3}} \right) = 2 + \sqrt{1-x^{2}} $

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