# summations!

guys i am new to mathematica ... and want to do summations... if i have
2 nested summations one ranging from say i = 0 to i = N and the inner
one from j = 0 to j = M , how do i represent it in mathematica for the
under.

\sigma{_i = 0}{N} \sigma{_j = 0}{M} [Sin ( \theta{_i,_j} ) * Cos (
\phi{_i} ) ]

an early responce would be great:)

regards,
-sr



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