alexh-g: Cos[x + t]*Sin[(x^2 - y^2)/4] + Sin[x + y + t]*Cos[(x^2 - y^2)/4] Tumblr Porn

alexh-g: Cos[x + t]Sin[(x^2 - y^2)/4] + Sin[x + y + t]Cos[(x^2 - y^2)/4]

alexh-g: Cos[x + t]*Sin[(x^2 - y^2)/4] + Sin[x + y + t]*Cos[(x^2 - y^2)/4]

tags: 悲しい少女,

from: https://www.tumblr.com/blog/view/scuishi/95503897413

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