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Howmanysummandsareinj=j0mk=k0njk?

Short Answer

Expert verified

Totalnumberofsummandsinj=j0mk=k0njkare(k0-n+1)×(j0-m+1)

Step by step solution

01

Step 1. Given Information

j=j0mk=k0njk

02

Step 2. Finding summands

j=j0mk=k0njk=j=j0mk=k0njkThesummationk=520j2ejkcanbeexpandedbyreplacingkwithk0andrewritingeachtermwhenkendsatn.Thenumberoftermsinabovesummationarek0-n+1.Similarlywhenexpandedj=j0mk=k0njkbyreplacingjfromj0tom,thenumberofk=k0njktermsobtainedarej0-m+1Hencetotalnumberofsummandsare=(k0-n+1)×(j0-m+1)Totalnumberofsummandsinj=j0mk=k0njkare(k0-n+1)×(j0-m+1)

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