- #1
finalsblow
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- 0
Did this as a homework problem, got it wrong obviously. Not too sure how to solve it otherwise
Let f be a function from A to A. Prove that for all m,n ε N, f^m*f^n = f^(m+N)
f^(m+1) f^(n+1) = f(f^m) * f(f^n)
= f(f^m * f^n) <--- this I think is what I did wrong
= f(f^(m+n)) since a^m * a^n = a^(m+n)
= f^(m+n+1)
= f^(x+1) where x = m+n
Homework Statement
Let f be a function from A to A. Prove that for all m,n ε N, f^m*f^n = f^(m+N)
Homework Equations
The Attempt at a Solution
f^(m+1) f^(n+1) = f(f^m) * f(f^n)
= f(f^m * f^n) <--- this I think is what I did wrong
= f(f^(m+n)) since a^m * a^n = a^(m+n)
= f^(m+n+1)
= f^(x+1) where x = m+n
