[問題] r 積分回傳數值值

[loser113 (洨大魯蛇ㄍ)]

> integrand <- function(x) {1/((x+1)*sqrt(x))}
> a=integrate(integrand, lower = 0, upper = Inf);a
3.141593 with absolute error < 2.7e-05

我只要a=3.141593 還需要多加甚麼

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→ Wush978: a$value
→ loser113: thanks