Proof by Induction October 27, 2009 StaceyLeave a comment Q: Prove by induction that: 1*1!+2*2!+…+n*n! = (n+1)! – 1 Read More » Share this:FacebookTwitterEmailPinterestPrintLike this:Like Loading...
Proof with functions October 6, 2009 StaceyLeave a comment Q: Let f and g be invertible functions such that: f: S –> T g: T –>U (1) Show g compose f is invertible and, (2) that (g compose f) inverse = (f inverse) compose (g inverse) Read More » Share this:FacebookTwitterEmailPinterestPrintLike this:Like Loading...