int frac{{2{x^{12}} + 5{x^9}}}{{{{left( {{x^5 | vedclass

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(D) ધારો કે $I = \int \frac{{2{x^{12}} + 5{x^9}}}{{{{\left( {{x^5} + {x^3} + 1} \right)}^3}}}dx$.અંશ અને છેદને ${x^{15}}$ વડે ભાગતા:$I = \int \frac{{\

Vedclass · Accepted Answer

$\frac{{{x^{10}}}}{{2{{\left( {{x^5} + {x^3} + 1} \right)}^2}}} + c$

Vedclass · Answer

(D) ધારો કે $I = \int \frac{{2{x^{12}} + 5{x^9}}}{{{{\left( {{x^5} + {x^3} + 1} \right)}^3}}}dx$.અંશ અને છેદને ${x^{15}}$ વડે ભાગતા:$I = \int \frac{{\frac{{2{x^{12}}}}{{{x^{15}}}} + \frac{{5{x^9}}}{{{x^{15}}}}}}{{{{\left( {\frac{{{x^5} + {x^3} + 1}}{{{x^5}}}} \right)}^3}}}dx = \int \frac{{2{x^{ - 3}} + 5{x^{ - 6}}}}{{{{\left( {1 + {x^{ - 2}} + {x^{ - 5}}} \right)}^3}}}dx$.ધારો કે $t = 1 + {x^{ - 2}} + {x^{ - 5}}$.તેથી $dt = ( - 2{x^{ - 3}} - 5{x^{ - 6}})dx$,જેનો અર્થ છે કે $-dt = (2{x^{ - 3}} + 5{x^{ - 6}})dx$.આ કિંમતોને સંકલનમાં મૂકતા:$I = \int \frac{{ - dt}}{{{t^3}}} = - \int {{t^{ - 3}}} dt = - \left( \frac{{{t^{ - 2}}}}{{ - 2}} \right) + C = \frac{1}{{2{t^2}}} + C$.$t = 1 + \frac{1}{{{x^2}}} + \frac{1}{{{x^5}}} = \frac{{{x^5} + {x^3} + 1}}{{{x^5}}}$ મૂકતા:$I = \frac{1}{{2{{\left( {\frac{{{x^5} + {x^3} + 1}}{{{x^5}}}} \right)}^2}}} + C = \frac{{{x^{10}}}}{{2{{\left( {{x^5} + {x^3} + 1} \right)}^2}}} + C$.

$\int \frac{{2{x^{12}} + 5{x^9}}}{{{{\left( {{x^5} + {x^3} + 1} \right)}^3}}}dx = $

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