将极坐标系下的二次积分[img=282x54]18031ae5375f59e.png[/img]化为直角坐标系下的二次积分,则[img=26x19]18031ae53fcc62c.png[/img] ( )
A: [img=203x58]18031ae549aeceb.png[/img]
B: [img=191x55]18031ae554430e0.png[/img]
C: [img=194x58]18031ae55e69ad1.png[/img]
D: [img=201x56]18031ae5699ac28.png[/img]
A: [img=203x58]18031ae549aeceb.png[/img]
B: [img=191x55]18031ae554430e0.png[/img]
C: [img=194x58]18031ae55e69ad1.png[/img]
D: [img=201x56]18031ae5699ac28.png[/img]
举一反三
- 在极坐标系下的二次积分 [img=245x52]180395697b1cb87.png[/img] 化为直角坐标系下的二次积分为( ) A: [img=203x58]180395698647090.png[/img] B: [img=193x56]1803956991cec70.png[/img] C: [img=194x58]180395699c450c2.png[/img] D: [img=201x56]18039569a6c4a28.png[/img]
- 在极坐标系下的二次积分[img=245x52]1803956d18c6ad9.png[/img] 化为直角坐标系下的二次积分为( ) A: [img=203x58]1803956d23ae7a2.png[/img] B: [img=193x56]1803956d2e39a15.png[/img] C: [img=194x58]1803956d3935149.png[/img] D: [img=201x56]1803956d43eec7c.png[/img]
- 设区域D:由直线y=0、y=x、曲线[img=228x95]17da6e9cceb3435.png[/img]=1与 x>0所围成,则二次积分[img=732x214]17da6e9ce28a89f.png[/img] ( ).
- 令F(x):x是有理数,G(x):x是实数。将命题“所有的有理数都是实数,但有的有实数不是有理数”符号化为() 未知类型:{'options': ['17e0a83a4157352.jpgx(F(x)∧G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)[img=14x9]17e0a73094b5dcf.jpg[/img][img=10x11]17e0a839b915354.jpg[/img]F(x))', ' [img=8x14]17e0a83a4157352.jpg[/img]x(F(x)[img=14x9]17e0a73094b5dcf.jpg[/img]G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)∧[img=10x11]17e0a839b915354.jpg[/img]F(x))', ' [img=8x14]17e0a83a4157352.jpg[/img]x(F(x)∧G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)∧[img=10x11]17e0a839b915354.jpg[/img]F(x))', ' [img=8x14]17e0a83a4157352.jpg[/img]x(F(x)[img=14x9]17e0a73094b5dcf.jpg[/img]G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)[img=14x9]17e0a73094b5dcf.jpg[/img][img=10x11]17e0a839b915354.jpg[/img]F(x))'], 'type': 102}
- 螺纹画法正确的是[img=859x181]17869a9ab2463fb.png[/img] A: BC B: AB C: BD D: AE E: AD