Comments by "Fhf Fhf" (@fhffhff) on "ВАСЯ НА СЕНЕ" channel.

  1. En=1;∞(-1)/(2n-1)!π+πsh1=0
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  2. xln-¹x+c
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  3. tg(x/2)=t $4t/(-2+(t-1)²)/(1+t²)dt= 0,5ln|t-1-√2|+0,5ln|t-1+√2|-0,5ln|t²+1|-arctgt+c=0,5ln|tg(x/2)-1-√2|+ 0,5ln|tg(x/2)-1+√2|-0,5ln|tg²(x/2)+1| -x/2+c 4t=A(t-1+√2)(t²+1)+B(t-1-√2)(t²+1) +C(t-1+√2)(t-1-√2)*2t+D(t-1+√2)(t- 1-√2){A=0,5,B=1/2,C=-0,5,D=-1;
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  4. E(x)(-0,5^n+1)-0,5^n*(n+2)+2
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