Limit[(x − 3)/(x^2 + a), x -> 2]=-1/8 https://www.wolframalpha.com/input?i=Limit%5B%28x+%E2%88%92+3%29%2F%28x%5E2+%2B+a%29%2C+x+-%3E+2%5D%3D-1%2F8&lang=ja
Limit[(x − 3)/(x^2 + a), x -> 2]=-1/8
https://www.wolframalpha.com/input?i=Limit%5B%28x+%E2%88%92+3%29%2F%28x%5E2+%2B+a%29%2C+x+-%3E+2%5D%3D-1%2F8&lang=ja