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If int_(-20)^(-10)((x^(2)-x)/(x^(3)-3x+1))^(2)+dx+int_(1/21)^(1/11)((x^(2)-x)/(x^(3)-3x+1))^(2)dx + int_(21/20)^(11/10)((x^(2)-x)/(x^(3)-3x+1))^(2)dx=l then l+420/7939 is equal to |
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Answer» `110/939` We get `L=int_(-20)^(-10) ((x^(2)-x)/(x^(3)-3x+1))(1+1/(x^(2))+1/(1-x)^(2))dx` Let `U=(x^(3)-3x+1)/(x(x-1))` then `l= int(du)/(u^(2))` |
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