InterviewSolution
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`int sqrt((a+x)/(a-x))` का मान ज्ञात कीजिए । |
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Answer» `int sqrt((a+x)/(a-x))dx=intsqrt(((a+x)(a+x))/((a-x)(a+x)))dx` `" "=int(a+x)/(sqrt(a^(2)-x^(2)))` `=int(a)/(sqrt(a^(2)-x^(2)))dx+int(x)/(sqrt(a^(2)-x^(2)))dx` माना `a^(2)-x^(2)=t` `=a int(1)/(sqrt(a^(2)-x^(2)))dx+int(dt)/(-2sqrtt)" "{:(rArr" "-2x=(dt)/(dx)),(rArr" "xdx=(dt)/(dx)):}` `" "=a.sin^(-1).(x)/(a)-(1)/(2).2sqrtt+c` `" "=asin^(-1).(x)/(a)-sqrt(a^(2)-x^(2))+c` |
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