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निम्न समाकलों के मान ज्ञात कीजिए - (i) `int_(-pi//4)^(pi//4)"cosec"^(2)xdx` |
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Answer» Correct Answer - `-2` `I=int_(-pi//4)^(pi//4)"cosec"^(2)xdx=2int_(0)^(pi//4)"cosec"^(2)xdx` `=2[-cot x]_(0)^(pi//4)=-2[cot.(pi)/(4)-cot 0]=-2` |
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