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The value of int_(-20pi)^(20 pi) [ sin x + cos x] dxis(where [.] denotes greatest integer function) |
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Answer» `10 pi` `=20XX[(pi)/(2)-pi+(3pi)/(4)-2xx(3pi)/(2)+2pi-(7pi)/(4)+(3pi)/(2)]=20xx-pi=-20pi` |
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