若f(x)dx＝1，g(x)dx＝－3，则[2f(x)＋g(x)]dx＝( )A．2 ... 问题详情：若f(x)dx＝1，g(x)dx＝－3，则[2f(x)＋g(x)]dx＝()A．2 B．－3C．－1 D．4【回答】C[[2f(x)＋g(x)]dx＝2f(x)dx＋g(x)dx＝2×...
![若f(x)dx＝1，g(x)dx＝－3，则[2f(x)＋g(x)]dx＝( )A．2 ...](https://i3.guowenba.com/2a3f740786fedf90c5/2b2f7f1c/706d26/70632943dbadca8acf44-s.gif "若f(x)dx＝1，g(x)dx＝－3，则[2f(x)＋g(x)]dx＝( )A．2 ...")