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?1/(1+x^2)

Saideep Ch , 13 Years ago
Grade 11
anser 1 Answers
aniket deroy

Last Activity: 12 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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