The value of 20083-220084+320085-420086+.......200520082007is,wherenr=Cn,r,is
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answer is 4012.
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Detailed Solution
f(x)=1+x2008x2,f1-1=0 f1x=x220081+x2007-1+x20082xx4f1-1=0 Left hand side of the equation f1x=x220081+x2007-1+x20082xx4200802+20081-1+200820+200831+220084-1+...-200620082008=0The given expression =-2+2008+2006=4012