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The integral `int_(2)(4)(logx^(2))/(logx^(2)+log(36-12x+x^(2))) dx` is equal toA. `2`B. `4`C. `1`D. `6` |
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Answer» Correct Answer - C `I=int_(2)^(4)(logx^(2))/(logx^(2)+log(36-12x+x^(2))dx` `I=2/2 int_(2)^(4)(log|x|)/(log|x|+log||6-x|)dx` ……….i `I=int_(2)^(4)(log|6-x|)/(log|6-x|+log|x|) dx{int_(a)^(b)f(x)dx=int_(1)^(b)f(a+b-x)dx}` ……ii Adding i and ii `2I=int_(2)^(4)(log|x|+log|6-x|)/(log|x|+log|6-x|)dx=int_(2)^(4)dx=2` Hence `I=1` |
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