若要求:当数学式3 A: if(x>3)if(x<7)y=1; B: if(x>3||x<7)y=1; C: if(x<3);elseif(x<7)y=1 D: if(!(x<=3))y=y;elseif(7>x)y=1;
若要求:当数学式3 A: if(x>3)if(x<7)y=1; B: if(x>3||x<7)y=1; C: if(x<3);elseif(x<7)y=1 D: if(!(x<=3))y=y;elseif(7>x)y=1;
【单选题】设全集U={x|-7≤x≤7},A={x|-1≤x4},B={x|-2≤x≤3},Cu(A∪B)= A. {x|-7≤x≤-1} B. {x|-7≤x≤-1或3<x≤7} C. {x|-7≤x<2或4≤x≤7} D. {4≤x≤7}
【单选题】设全集U={x|-7≤x≤7},A={x|-1≤x4},B={x|-2≤x≤3},Cu(A∪B)= A. {x|-7≤x≤-1} B. {x|-7≤x≤-1或3<x≤7} C. {x|-7≤x<2或4≤x≤7} D. {4≤x≤7}
set1 = {x for x in range(10) if x%2!=0} set1.remove(1) print(set1) 以上代码的运行结果为? A: {1, 3, 5, 7, 9} B: {1, 3, 5, 7} C: {3, 5, 7, 9} D: {3, 5, 7}
set1 = {x for x in range(10) if x%2!=0} set1.remove(1) print(set1) 以上代码的运行结果为? A: {1, 3, 5, 7, 9} B: {1, 3, 5, 7} C: {3, 5, 7, 9} D: {3, 5, 7}
Simplify the expression:$({\frac{3x^{3/2}y^3}{x^2y^{-1/2}})^{-2}}$Which answer is CORRECT? A: $9xy^7$ B: $\frac19 xy^{-7}$ C: $\frac19 x^{-1}y^7$ D: $9 x^{-1}y^7$
Simplify the expression:$({\frac{3x^{3/2}y^3}{x^2y^{-1/2}})^{-2}}$Which answer is CORRECT? A: $9xy^7$ B: $\frac19 xy^{-7}$ C: $\frac19 x^{-1}y^7$ D: $9 x^{-1}y^7$
set1 = {x for x in range(10) if x%2!=0} print(set1) 以上代码的运行结果为? A: {1, 3, 5, 7, 9} B: {1, 3, 5, 7} C: {3, 5, 7, 9} D: {3, 5, 7}
set1 = {x for x in range(10) if x%2!=0} print(set1) 以上代码的运行结果为? A: {1, 3, 5, 7, 9} B: {1, 3, 5, 7} C: {3, 5, 7, 9} D: {3, 5, 7}
以下程序的输出结果是:list = ["1","3" ,"5"]def app(x):list. append(x)app( "7" )print( list)} A: ['1','3','5'] B: ['1','3','5','7'] C: ['7'] D: "1,3,5,7"
以下程序的输出结果是:list = ["1","3" ,"5"]def app(x):list. append(x)app( "7" )print( list)} A: ['1','3','5'] B: ['1','3','5','7'] C: ['7'] D: "1,3,5,7"
设X为随机变量,且E(X)=3,E(X2)=10,则D(X)=_____。 A: -7 B: 7 C: 1 D: -1
设X为随机变量,且E(X)=3,E(X2)=10,则D(X)=_____。 A: -7 B: 7 C: 1 D: -1
\(\int { { {\sin }^{2}}x { { \cos }^{5}}xdx}\)=( ) A: \(\frac{1}{3} { { \sin }^{3}}x-\frac{2}{5} { { \sin }^{5}}x+\frac{1}{7} { { \sin }^{7}}x+C\) B: \(\frac{2}{3} { { \sin }^{3}}x-\frac{1}{5} { { \sin }^{5}}x-\frac{1}{7} { { \sin }^{7}}x+C\) C: \(\frac{1}{3} { { \cos }^{3}}x-\frac{2}{5} { { \cos }^{5}}x+\frac{1}{7} { { \cos }^{7}}x+C\) D: \(\frac{2}{3} { { \cos }^{3}}x-\frac{1}{5} { { \cos }^{5}}x-\frac{1}{7} { { \cos }^{7}}x+C\)
\(\int { { {\sin }^{2}}x { { \cos }^{5}}xdx}\)=( ) A: \(\frac{1}{3} { { \sin }^{3}}x-\frac{2}{5} { { \sin }^{5}}x+\frac{1}{7} { { \sin }^{7}}x+C\) B: \(\frac{2}{3} { { \sin }^{3}}x-\frac{1}{5} { { \sin }^{5}}x-\frac{1}{7} { { \sin }^{7}}x+C\) C: \(\frac{1}{3} { { \cos }^{3}}x-\frac{2}{5} { { \cos }^{5}}x+\frac{1}{7} { { \cos }^{7}}x+C\) D: \(\frac{2}{3} { { \cos }^{3}}x-\frac{1}{5} { { \cos }^{5}}x-\frac{1}{7} { { \cos }^{7}}x+C\)
设(X,Y)的分布律为[img=317x47]18039fa216cb556.png[/img]V=max(X,Y), 则P(V=1)等于 A: 1/7 B: 2/7 C: 3/7 D: 4/7
设(X,Y)的分布律为[img=317x47]18039fa216cb556.png[/img]V=max(X,Y), 则P(V=1)等于 A: 1/7 B: 2/7 C: 3/7 D: 4/7
设(X,Y)的分布律为[img=317x47]18036e2ccb88792.png[/img]V=max(X,Y), 则P(V=1)等于 A: 1/7 B: 2/7 C: 3/7 D: 4/7
设(X,Y)的分布律为[img=317x47]18036e2ccb88792.png[/img]V=max(X,Y), 则P(V=1)等于 A: 1/7 B: 2/7 C: 3/7 D: 4/7