대수에서는 eval at a 인데 원래 미적에선 모르겟
https://math.stackexchange.com/questions/52651
f of x evaluated at x equals a 아니면 f of x at x equals a - dc App
대수에서는 eval at a 인데 원래 미적에선 모르겟
https://math.stackexchange.com/questions/52651
f of x evaluated at x equals a 아니면 f of x at x equals a - dc App