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OpenStudy (anonymous):
can someone explain this step to me?
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OpenStudy (anonymous):
they started with (n+1)(n+1)! and got 1+(n+1)
OpenStudy (anonymous):
the factorial rule is n!=n(n-1)!
OpenStudy (anonymous):
? thats not right, ask your math teacher about that one, n=n(n-1) would not turn out to be 1+(n+1)
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