Sandpit

$\overbrace {1+2+\cdots +200} ^{5150}$

dbtest 1 test blacklist

$\iint y^{2}dy$ $\iint y^{2}rrrrdy$

• sand 2

$y=nx^{2}+mx+c$

$y=nx^{8}+mx^{4}+c$

$y=mx+c$

Notes

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