問題文全文(内容文)：
目標$\int_0^\infty e^{-x^2}dx = \frac{\sqrt x}{2}$
準備$∬_{D_{a}}e^{-(x^2+y^2)}dxdy$
$D_a:x^2+y^2 \leqq a^2$
$x \geqq 0 , y \geqq 0$
目標$\int_0^\infty e^{-x^2}dx = \frac{\sqrt x}{2}$
準備$∬_{D_{a}}e^{-(x^2+y^2)}dxdy$
$D_a:x^2+y^2 \leqq a^2$
$x \geqq 0 , y \geqq 0$
単元：
Warning: usort() expects parameter 1 to be array, bool given in /home/kaiketsudb/kaiketsu-db.net/public_html/wp-content/themes/lightning-child-sample/single.php on line 102
Warning: Invalid argument supplied for foreach() in /home/kaiketsudb/kaiketsu-db.net/public_html/wp-content/themes/lightning-child-sample/single.php on line 103
Warning: usort() expects parameter 1 to be array, bool given in /home/kaiketsudb/kaiketsu-db.net/public_html/wp-content/themes/lightning-child-sample/single.php on line 102
Warning: Invalid argument supplied for foreach() in /home/kaiketsudb/kaiketsu-db.net/public_html/wp-content/themes/lightning-child-sample/single.php on line 103
指導講師：
ますただ
問題文全文(内容文)：
目標$\int_0^\infty e^{-x^2}dx = \frac{\sqrt x}{2}$
準備$∬_{D_{a}}e^{-(x^2+y^2)}dxdy$
$D_a:x^2+y^2 \leqq a^2$
$x \geqq 0 , y \geqq 0$
目標$\int_0^\infty e^{-x^2}dx = \frac{\sqrt x}{2}$
準備$∬_{D_{a}}e^{-(x^2+y^2)}dxdy$
$D_a:x^2+y^2 \leqq a^2$
$x \geqq 0 , y \geqq 0$
投稿日：2020.11.16