int(1)/(1+(2x+1)^(2))dx

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(1) I=int(1)/((x^(2)+1)^(2))dx

Evalute the following integrals int (1)/((x+ 1)^(2)(x^(2) + 1)) dx

int(1)/((x+1)^2(x^2+1))dx=

int(1)/((x+1)^(2)(x^(2)+1))dx

"int_1^(2)((1)/(x)-(1)/(2x^(2)))dx

int (1)/((1 + x^(2)) sqrt(1-x^(2))) dx=

underset0overset1int((1-x^2)/(1+x^2))dx

int(1)/(1+3cos^(2)x)dx=(1)/(2)tan^(-1)((tan x)/(2))+c

Evaluate : int_(-1)^(1)(x^(2))/(1+x^(2))dx

int_(-1)^(1)(x^(2))/(1+x^(2))dx=