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Category: Integration

1-calculate-I-n-0-dx-2x-2-5x-3-n-2-calculate-0-dx-2x-2-5x-3-2-and-0-dx-2x-2-5x-3-3-

Question Number 96834 by mathmax by abdo last updated on 05/Jun/20 $$\left.\mathrm{1}\right)\mathrm{calculate}\:\mathrm{I}_{\mathrm{n}} =\:\int_{\mathrm{0}} ^{\infty} \:\:\:\frac{\mathrm{dx}}{\left(\mathrm{2x}^{\mathrm{2}} +\mathrm{5x}+\mathrm{3}\right)^{\mathrm{n}} } \\ $$$$\left.\mathrm{2}\right)\:\mathrm{calculate}\:\int_{\mathrm{0}} ^{\infty} \:\frac{\mathrm{dx}}{\left(\mathrm{2x}^{\mathrm{2}} \:+\mathrm{5x}+\mathrm{3}\right)^{\mathrm{2}} }\:\mathrm{and}\:\int_{\mathrm{0}} ^{\infty} \:\frac{\mathrm{dx}}{\left(\mathrm{2x}^{\mathrm{2}}…

Question-96784

Question Number 96784 by 175 last updated on 04/Jun/20 Answered by Sourav mridha last updated on 04/Jun/20 $$\:=\int\frac{\mathrm{2}+\boldsymbol{{x}}^{\mathrm{2}} +\boldsymbol{{x}}}{\boldsymbol{{x}}^{\mathrm{2}} \sqrt{\boldsymbol{{x}}^{\mathrm{2}} +\boldsymbol{{x}}+\mathrm{1}}}\:\boldsymbol{{dx}}\:+\frac{\mathrm{2}}{\boldsymbol{{x}}}\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\: \\ $$$$=\int\frac{\boldsymbol{{d}}\left(\boldsymbol{{x}}+\frac{\mathrm{1}}{\mathrm{2}}\right)}{\:\sqrt{\left(\boldsymbol{{x}}+\frac{\mathrm{1}}{\mathrm{2}}\right)^{\mathrm{2}} +\left(\frac{\sqrt{\mathrm{3}}}{\mathrm{2}}\right)^{\mathrm{2}} }}+\frac{\mathrm{2}}{\boldsymbol{{x}}}…

solve-y-y-y-cos-2t-with-y-0-y-0-1-

Question Number 96771 by abdomathmax last updated on 04/Jun/20 $$\mathrm{solve}\:\mathrm{y}^{''} \:−\mathrm{y}^{'} \:+\mathrm{y}\:=\:\mathrm{cos}\left(\mathrm{2t}\right)\:\mathrm{with}\:\mathrm{y}\left(\mathrm{0}\right)=\mathrm{y}^{'} \left(\mathrm{0}\right)=−\mathrm{1} \\ $$ Answered by mathmax by abdo last updated on 05/Jun/20 $$\mathrm{let}\:\mathrm{solve}\:\mathrm{by}\:\mathrm{laplce}\:…