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Category: Integration

calculate-A-n-W-n-1-x-2-y-2-1-x-2-y-2-dxdy-with-W-n-1-n-n-2-2-find-lim-n-A-n-

Question Number 59163 by maxmathsup by imad last updated on 05/May/19 $$\left.{calculate}\:{A}_{{n}} =\int\int_{{W}_{{n}} } \:\:\:\frac{\mathrm{1}−\sqrt{{x}^{\mathrm{2}} \:+{y}^{\mathrm{2}} }}{\mathrm{1}+\sqrt{{x}^{\mathrm{2}} \:+{y}^{\mathrm{2}} }}\:{dxdy}\:\:\:{with}\:{W}_{{n}} \:=\right]\frac{\mathrm{1}}{{n}},{n}\left[^{\mathrm{2}} \right. \\ $$$$\left.\mathrm{2}\right)\:{find}\:{lim}_{{n}\rightarrow+\infty} \:{A}_{{n}} \\…

calculate-D-x-2-y-2-xy-dxdy-with-D-x-y-R-2-0-y-1-and-2-x-5-

Question Number 59162 by maxmathsup by imad last updated on 05/May/19 $${calculate}\:\:\int\int_{{D}} \:\:\sqrt{{x}^{\mathrm{2}} −{y}^{\mathrm{2}} }{xy}\:{dxdy}\:\:{with} \\ $$$${D}\:=\left\{\left({x},{y}\right)\in\:{R}^{\mathrm{2}} \:\:\:/\mathrm{0}\leqslant{y}\leqslant\mathrm{1}\:\:{and}\:\:\mathrm{2}\:\leqslant{x}\:\leqslant\mathrm{5}\:\right\} \\ $$ Terms of Service Privacy Policy…

calculatef-a-0-ln-a-2-x-2-a-2-x-2-dx-with-gt-0-1-calculate-0-ln-2-x-2-2-x-2-dx-and-0-ln-3-x-2-3-x-2-dx-

Question Number 59161 by maxmathsup by imad last updated on 05/May/19 $${calculatef}\left({a}\right)=\:\:\int_{\mathrm{0}} ^{\infty} \:\:\:\frac{{ln}\left({a}^{\mathrm{2}} +{x}^{\mathrm{2}} \right)}{{a}^{\mathrm{2}} +{x}^{\mathrm{2}} }{dx}\:\:\:{with}\:>\mathrm{0} \\ $$$$\left.\mathrm{1}\right)\:{calculate}\:\int_{\mathrm{0}} ^{\infty} \:\:\frac{{ln}\left(\mathrm{2}+{x}^{\mathrm{2}} \right)}{\mathrm{2}+{x}^{\mathrm{2}} }{dx}\:\:{and}\:\int_{\mathrm{0}} ^{\infty}…

let-f-x-0-cos-xcos-x-2-2-d-and-g-x-0-sin-xcos-x-2-2-d-1-find-a-explicit-form-of-f-x-and-g-x-2-find-the-value-of-0-cos-2cos-4-

Question Number 59160 by maxmathsup by imad last updated on 05/May/19 $${let}\:{f}\left({x}\right)\:=\int_{\mathrm{0}} ^{\infty} \:\:\frac{{cos}\left({xcos}\theta\right)}{{x}^{\mathrm{2}} \:+\theta^{\mathrm{2}} }\:{d}\theta\:\:\:\:\:\:{and}\:\:{g}\left({x}\right)\:=\int_{\mathrm{0}} ^{\infty} \:\:\:\:\:\frac{{sin}\left({xcos}\theta\right)}{{x}^{\mathrm{2}} \:+\theta^{\mathrm{2}} }\:{d}\theta \\ $$$$\left.\mathrm{1}\right)\:{find}\:{a}\:{explicit}\:{form}\:{of}\:{f}\left({x}\right)\:{and}\:{g}\left({x}\right) \\ $$$$\left.\mathrm{2}\right)\:{find}\:{the}\:{value}\:{of}\:\int_{\mathrm{0}} ^{\infty}…

3-2-y-3-6-y-2-4-dy-

Question Number 124672 by sdfg last updated on 05/Dec/20 $$\int_{−\mathrm{3}} ^{−\mathrm{2}} \left({y}+\mathrm{3}\right)^{\mathrm{6}} \left({y}+\mathrm{2}\right)^{\mathrm{4}} {dy} \\ $$ Commented by mohammad17 last updated on 05/Dec/20 $${put}:{n}={y}+\mathrm{3}\Rightarrow{y}={n}−\mathrm{3}\Rightarrow{dy}={dn} \\…

1-3-x-1-3-3-x-2-dx-

Question Number 124675 by sdfg last updated on 05/Dec/20 $$\int_{\mathrm{1}} ^{\mathrm{3}} \left({x}−\mathrm{1}\right)^{\mathrm{3}} \left(\mathrm{3}−{x}\right)^{\mathrm{2}} {dx} \\ $$ Commented by mohammad17 last updated on 05/Dec/20 $${put}:{m}={x}−\mathrm{1}\Rightarrow{x}={m}+\mathrm{1}\Rightarrow{dx}={dm} \\…

2-3-2-cos-sec-1-x-x-x-2-1-dx-2-2-sec-2-sec-1-x-x-x-2-1-dx-

Question Number 124644 by benjo_mathlover last updated on 05/Dec/20 $$\underset{\mathrm{2}/\sqrt{\mathrm{3}}} {\overset{\mathrm{2}} {\int}}\:\frac{\mathrm{cos}\:\left(\mathrm{sec}^{−\mathrm{1}} {x}\right)}{{x}\sqrt{{x}^{\mathrm{2}} −\mathrm{1}}}\:{dx}\: \\ $$$$\underset{\:\sqrt{\mathrm{2}}} {\overset{\mathrm{2}} {\int}}\:\frac{\mathrm{sec}\:^{\mathrm{2}} \left(\mathrm{sec}^{−\mathrm{1}} {x}\right)}{{x}\sqrt{{x}^{\mathrm{2}} −\mathrm{1}}}\:{dx}\: \\ $$ Answered by…