不定積分 2x2e^x https://www.wolframalpha.com/input?i=%E4%B8%8D%E5%AE%9A%E7%A9%8D%E5%88%86+2x2e%5Ex&lang=ja
Integrate[2x2e^x, x]
https://www.wolframalpha.com/input?i=Integrate%5B2x2e%5Ex%2C+x%5D&lang=ja
不定積分 2x2e^x
https://www.wolframalpha.com/input?i=%E4%B8%8D%E5%AE%9A%E7%A9%8D%E5%88%86+2x2e%5Ex&lang=ja