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Grade 11Integral Calculus

?1/(1+x^2)

Profile image of Saideep Ch
14 Years agoGrade 11
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1 Answer

Profile image of aniket deroy
14 Years ago

1/(1+x^2)

LET X=TAN A

dX=SEC^2AdA

=SEC^2AdA/(1+TAN^2A)

=SEC^2AdA/SEC^2A

=dA

=A+C

=TAN

 

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