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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Mathematical Statistics (MS)
B99. if t = 100-k for k = 0, 1,.. , 100, then 100 (to-t2 + t4 +t100)+(t1 - t3 + ts -to9) equals (a) (r-1)100, (b) (r+1)100, (c) (2+ 1)100. (d) (-1)100
B99. If t = 100-k for k = 0, 1,.. , 100, then 100 (to-t2 + t4 +t100)+(t1 - t3 + ts -to9) equals (A) (r-1)100, (B) (r+1)100, (C) (2+ 1)100. (D) (-1)100
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Alka gupta![best-answer]()
correct answer A...
how are we doing the very last step ??
mam can you please tell how are we doing the very last step ??
simple....use modules property of complex number....i mentioned in solution...
how is (x+i)^200=(x^2-1)^100??
but |z|^2=re(z)^2+im (z)^2.And here im (z)=1 and not i
mam I think there is a mistake as the answer is given to be C