1.

If Δr=∣∣∣∣∣2r−1mCr1m2−12mm+1sin2(m2)sin2(m)sin2(m+1)∣∣∣∣∣,(0≤r≤m),then value of m∑r=0Δr is

Answer»

If Δr=

2r1mCr1m212mm+1sin2(m2)sin2(m)sin2(m+1)

,(0rm),


then value of mr=0Δr is



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