Product

Product[f,{i,imax}] evaluates the product ∏+i=1%imaxf. 

Product[f,{i,imin,imax}] starts with i=imin. 

Product[f,{i,imin,imax,di}] uses steps di. 

Product[f,{i,{i1,i2,…}}] uses successive values i1, i2, ….

Product[f,{i,imin,imax},{j,jmin,jmax},…] evaluates the multiple product ∏+i=imin%imax∏+j=jmin%jmax… f. 

Product[f,i] gives the indefinite product ∏+if.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.