Tuesday, 10 March 2026

Describe the set of complex number z for which |(x-3)/(x+3)|=2 geometrically. [ncert]




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If find x. 1/(9!) + 1/(10!) = x/(11!).

  Here n! is read as n factorial. It can be written as n(n-1)! or n(n-1)(n-1)!