函数[img=107x25]18038fd2cf63bf3.png[/img]的导数为( ).
A: [img=64x25]18038fd2d8c1a2c.png[/img]
B: [img=160x25]18038fd2e196f93.png[/img]
C: [img=160x25]18038fd2e9b11ac.png[/img]
D: [img=160x25]18038fd2f340136.png[/img]
A: [img=64x25]18038fd2d8c1a2c.png[/img]
B: [img=160x25]18038fd2e196f93.png[/img]
C: [img=160x25]18038fd2e9b11ac.png[/img]
D: [img=160x25]18038fd2f340136.png[/img]
举一反三
- 函数[img=107x25]18034667090ac99.png[/img]的导数为( ). A: [img=64x25]1803466711dd936.png[/img] B: [img=160x25]180346671f0d1b9.png[/img] C: [img=160x25]180346672744751.png[/img] D: [img=160x25]180346672fae356.png[/img]
- 求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4
- 设随机变量X服从均值为2的指数分布,X的分布函数为F(x),数学期望为E(X),方差为D(X),则以下结果正确的是 A: [img=128x28]1802d3b369ab5fe.png[/img] B: D(X)=4 C: P(X<2︱X>1)=F(1) D: P(X>2︱X>1)= F(1) E: [img=112x27]1802d3b372fb534.png[/img] F: D(X)=E(X) G: P(X≤2︱X>1)= F(2) H: [img=82x27]1802d3b37bbbf05.png[/img]
- 设随机变量X服从均值为2的指数分布,X的分布函数为F(x),数学期望为E(X),方差为D(X),则以下结果正确的是 A: [img=128x28]18034b986fbc78a.png[/img] B: D(X)=4 C: P(X<2︱X>1)=F(1) D: P(X>2︱X>1)= F(1) E: [img=112x27]18034b98781508a.png[/img] F: D(X)=E(X) G: P(X≤2︱X>1)= F(2) H: [img=82x27]18034b9880d080a.png[/img]
- 设随机变量X服从均值为2的指数分布,X的分布函数为F(x),数学期望为E(X),方差为D(X),则以下结果正确的是 A: [img=128x28]18033e117e9725e.png[/img] B: D(X)=4 C: P(X<2︱X>1)=F(1) D: P(X>2︱X>1)= F(1) E: [img=112x27]18033e11879f263.png[/img] F: D(X)=E(X) G: P(X≤2︱X>1)= F(2) H: [img=82x27]18033e1190d2ef2.png[/img]