InterviewSolution
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`int ((x+2)/(x+4))^2 e^x dx` is equal toA. `e^(x)((x)/(x+4))+c`B. `e^(x)((x+2)/(x+4))+c`C. `e^(x)((x-2)/(x+4))+c`D. `((2x e^(2))/(x+4))+c` |
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Answer» Correct Answer - A `I=int((x+2)/(x+4))^(2)e^(x) dx=int e^(x)[(x^(2)+4x+4)/((x+4)^(2))]dx` `=int e^(x)[(x(x+4))/((x+4)^(2))+(4)/((x+4)^(2))]dx` `=int e^(x)[(x)/(x+4)+(4)/((x+4)^(2))]dx` `=e^(x) ((x)/(x+4))+C` |
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