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OpenStudy (anonymous):
For the function \[f\left ( m,n \right )=\binom{m+n-1}{2}+m\]. If f(m,n)=k, then how can I find "m" and "n" when f(m,n)=k+1? Thanks.
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OpenStudy (anonymous):
the brackets meant "n choose r" combination. NOT vector.
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