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`int(dx)/(x+sqrtx)` का मान ज्ञात कीजिए । |
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Answer» माना `" "I=int(1)/(x+sqrtx)dx` `I=int(1)/(sqrtx(sqrtx+1))dx` माना `sqrtx+1=t` `rArr" "(1)/(2sqrtx)=(dt)/(dx)` `rArr" "(1)/(sqrtx)dx=2dt` `therefore" "I=int(1)/(t)(2dt)=2logt+c` `" "=2log(sqrtx+1)+c` |
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