[math-fun] a morning not very rich
23 Nov
2017
23 Nov
'17
11:04 p.m.
hello... for all x, sum(((-1)^i*2^(2*n-i)*(cos(x))^(2*n-i)*cos(i*x))/(i!*(2*n-i)!),i,0,2*n-1)=0; FME...
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françois mendzina essomba2