# flippin my bean

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bio website reddit.com/r/… location meatspace age member for 1 year, 9 months seen 9 hours ago profile views 1,001

when someone smiles at me, all I see is an ape bearing its teethe

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 10h comment What does $\frac{1}{n}$ converge too great answer, upboated. Dec8 comment homework problem I am struggling a lot with why are you in a topology class if math sucks ass? Nov29 comment How is 2 a prime number if you can divide it evenly. you have to make some assumptions in the beginning to get the ball rolling, and hope they're self-evident enough to not end up contradicting one another. Nov3 comment Singularities in (Elementary) Real Algebraic Geometry The cubic is $y^3+2y^2+y+(v-u^2)=0$, the roots will be $functions$ of $u$ and $v$, that's what I'm after, so that I can prove that $f(x,y)=(u(x,y),v(x,y))=(x,x^2-(y+1)^3+(y+1)^2)$ has an inverse which is analytic. Nov3 comment Singularities in (Elementary) Real Algebraic Geometry I'm having trouble understanding. Solving $v=f(u,y)$ for $y$ will give me 3 roots, each a function of $u$ and $v$, I should expect that one of these roots is a real analytic function in a nbhd of $(0,0)$, correct? Nov3 revised Singularities in (Elementary) Real Algebraic Geometry added 72 characters in body Nov3 revised Singularities in (Elementary) Real Algebraic Geometry added 1 characters in body Nov3 asked Singularities in (Elementary) Real Algebraic Geometry Oct5 accepted Prove that $\frac{d}{dx}\int_0^xf(x,y)dy = f(x,x)+\int_0^x\frac{\partial}{\partial x}f(x,y)dy$ Oct5 comment Prove that $\frac{d}{dx}\int_0^xf(x,y)dy = f(x,x)+\int_0^x\frac{\partial}{\partial x}f(x,y)dy$ super slick! =o Oct5 revised Prove that $\frac{d}{dx}\int_0^xf(x,y)dy = f(x,x)+\int_0^x\frac{\partial}{\partial x}f(x,y)dy$ [Edit removed during grace period] Oct5 asked Prove that $\frac{d}{dx}\int_0^xf(x,y)dy = f(x,x)+\int_0^x\frac{\partial}{\partial x}f(x,y)dy$ Sep25 accepted Let $b_n$ decrease monotonically to zero, prove $\sum b_nz^n$ converges for $|z|\leq 1$ and $z\neq 1$ Sep25 comment Let $b_n$ decrease monotonically to zero, prove $\sum b_nz^n$ converges for $|z|\leq 1$ and $z\neq 1$ @njguliyev oh nice, that does it right there, thanks. Sep25 asked Let $b_n$ decrease monotonically to zero, prove $\sum b_nz^n$ converges for $|z|\leq 1$ and $z\neq 1$ Sep21 comment Prove that if the Hessian of $f$ is positive definite at $a$, then the function attains a minimum at $a$ oh shoot you're right, ok that makes sense. Sep21 comment Prove that if the Hessian of $f$ is positive definite at $a$, then the function attains a minimum at $a$ not off the top of my head no, we've just been using this condition without explanation in a numerical optimization class. Sep21 comment Prove that if the Hessian of $f$ is positive definite at $a$, then the function attains a minimum at $a$ Are you sure? The wikipedia article doesn't mention it. Sep21 revised Prove that if the Hessian of $f$ is positive definite at $a$, then the function attains a minimum at $a$ added 27 characters in body Sep21 comment Prove that if the Hessian of $f$ is positive definite at $a$, then the function attains a minimum at $a$ I don't know about other conditions, I'm basing this off of en.wikipedia.org/wiki/… I guess it says the Hessian must be invertible as well.