Saturday, 6 May 2023

If f(x)=x+7 and g(x)=x-7, for every x€R, find fog(7).


 

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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)!