Distribute
 Usage
• Distribute[f[ ,  , ... ]] distributes f over Plus appearing in any of the  .
• Distribute[expr, g] distributes over g.
• Distribute[expr, g, f] performs the distribution only if the head of expr is f.
Notes
• Distribute effectively implements the distributive law for operators f and g. • Distribute explicitly constructs the complete result of a distribution; Expand, on the other hand, builds up results iteratively, simplifying at each stage. • Example: Distribute[f[a+b,c+d]]  . • Distribute[f[a+b,g[x,y],c], g] . • Distribute[expr, g, f, gp, fp] gives gp and fp in place of g and f respectively in the result of the distribution. • New in Version 1.
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