微分方程[img=108x26]1803a288dda2418.png[/img]的一个特解应具有形式( ).
A: [img=66x21]1803a288e600371.png[/img]
B: [img=86x21]1803a288ee1dd14.png[/img]
C: [img=76x21]1803a288f6af6ea.png[/img]
D: [img=76x21]1803a288ff928cb.png[/img]
A: [img=66x21]1803a288e600371.png[/img]
B: [img=86x21]1803a288ee1dd14.png[/img]
C: [img=76x21]1803a288f6af6ea.png[/img]
D: [img=76x21]1803a288ff928cb.png[/img]
举一反三
- 设[img=17x18]17e43b8a7cf80c8.png[/img]是3阶方阵,它的3个特征值[img=134x25]17e43b8a84f5078.png[/img],设[img=86x21]17e43b8a8d52165.png[/img],则[img=21x22]17e43b8a958518e.png[/img]=() A: 2- B: 2 C: 288 D: -288
- 微分方程[img=188x26]1803d34b15fd968.png[/img]$的一个特解应具有形式( ) A: [img=76x21]1803d34b1e9eb55.png[/img] B: [img=175x26]1803d34b27802e4.png[/img] C: [img=87x21]1803d34b301d6fb.png[/img] D: [img=164x26]1803d34b3836cfc.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}
- 设随机变量X的概率密度为[img=172x58]1802fe3273041d3.png[/img]则使得F{X > a} = F{X < a}成立,则a为( ). A: 2-1/4 B: 21/4 C: 1/2 D: 1-2-1/4
- 下列的推理结构中哪个是正确的推理形式()。 未知类型:{'options': ['([img=8x14]17e4385a99bb660.jpg[/img] x)P(x) ∧ ([img=8x14]17e4385a99bb660.jpg[/img]x)Q(x) → ([img=8x14]17e4385a99bb660.jpg[/img]x)(P(x) ∧Q(x))', ' ([img=8x14]17e4385a99bb660.jpg[/img] x)P(x) → ([img=8x14]17e4385a99bb660.jpg[/img]x)(P(x) ∧ Q(x))', ' ([img=8x14]17e4385a99bb660.jpg[/img]x)(P(x) ∨ Q(x)) → ([img=8x14]17e4385a99bb660.jpg[/img]x)P(x) ∨([img=8x14]17e4385a99bb660.jpg[/img]x)Q(x)', ' ([img=8x14]17e4385a99bb660.jpg[/img]x)(P(x)∨ Q(x)) → ([img=8x14]17e4385a99bb660.jpg[/img] x)P(x) ∧ ([img=8x14]17e4385a99bb660.jpg[/img] x)Q(x)'], 'type': 102}