137微分方程y"-4y=4的通解是______(C1,C2为任意常数)。
A: C1e2x+C2e-2x+1
B: C1e2x+C2e-2x-1
C: e2x-e-2x+1
D: C1e2x+C2e-2x-2
A: C1e2x+C2e-2x+1
B: C1e2x+C2e-2x-1
C: e2x-e-2x+1
D: C1e2x+C2e-2x-2
举一反三
- 求方程$y\frac{{{d}^{2}}y}{d{{x}^{2}}}-(\frac{dy}{dx})^{2}=0$的通解: A: $y={{C}_{1}}{{e}^{-{{C}_{2}}x}}$ B: $y={{C}_{1}}{{e}^{-{{C}_{2}}{{x}^{2}}}}$ C: $y={{C}_{1}}x{{e}^{-{{C}_{2}}{{x}^{2}}}}$ D: $y={{C}_{1}}{{e}^{{{C}_{2}}x}}$
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- ∫xe^(x^2)dx=( ) A: 1/2(e^(x^2)) B: 1/2(e^(x^2))+C C: -1/2(e^(x^2)) D: -1/2(e^(x^2))十C
- 方程\(\left( {1 - {x^2}} \right)y - xy' = 0\)的通解是( )。 A: \(y = C\sqrt {1 - {x^2}} \) B: \(y = - {1 \over 2}{x^3} + Cx\) C: \(y = {C \over {\sqrt {1 - {x^2}} }}\) D: \(y = Cx{e^{ - {1 \over 2}{x^2}}}\)