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All questions asked by rjdown

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A single word for "stuck between a rock and a hard place"

9   English Language & Usage Asked on 08/01/2021

single word requests 

Proving $frac1{2pi} int_0^{2pi} frac{R^2-r^2}{R^2-2Rrcostheta+r^2} dtheta =1$ by integrating $frac{R+z}{z(R-z)}$ without residue theorem.

4   Mathematics Asked on 12/21/2021

complex analysis  complex integration 

What is the ordinary differential equation for double exponential summation?

3   Mathematics Asked on 12/21/2021

ordinary differential equations 

What is the value of $1 -omega^h + omega^{2h} -...+(-1)^{n-1} omega^{(n-1)h}$ when $omega$ is a root of unity?

0   Mathematics Asked on 12/21/2021

complex analysis  complex numbers  roots of unity  solution verification 

Why are the supremums of this linearly interpolated function equal?

0   Mathematics Asked on 12/21/2021

general topology  proof explanation  real analysis 

What is the definition of "a derivation of a sequent "?

1   Mathematics Asked on 12/21/2021

computer science  logic  natural deduction  proof theory  sequent calculus 

Cartan Differentiable calculus. Show $g(x,y)= frac{f(x)-f(y)}{x-y}$ is differentiable at $(x_{0},x_{0})$

0   Mathematics Asked on 12/21/2021

banach spaces  derivatives  differential 

Proving a linear map is surjective

1   Mathematics Asked on 12/21/2021

linear algebra  vector space isomorphism 

Probability of Normal Distribution

1   Mathematics Asked on 12/21/2021

normal distribution  probability  probability distributions 

The resultant of two homogeneous polynomials is homogeneous

1   Mathematics Asked on 12/21/2021

polynomials 

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