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Let |Z(r) - r| le r, Aar = 1,2,3….,n. Th...

Let `|Z_(r) - r| le r, Aar = 1,2,3….,n`. Then `|sum_(r=1)^(n)z_(r)|` is less than

A

n

B

2n

C

n(n+1)

D

`(n(n+1))/(2)`

Text Solution

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The correct Answer is:
C
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ARIHANT MATHS-COMPLEX NUMBERS-Exercise (Single Option Correct Type Questions)
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  8. Find the 3rd term of A.P if a=1 , d=2

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  12. Let |Z(r) - r| le r, Aar = 1,2,3….,n. Then |sum(r=1)^(n)z(r)| is less ...

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  13. If arg ((z(1) -(z)/(|z|))/((z)/(|z|))) = (pi)/(2) and |(z)/(|z|)-z(1)|...

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  15. Find the 10th term of A.P if a=1 , d=2

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  16. If z=(3+7i)(lambda+imu)," when " lambda,mu in I-{0} " and " i=sqrt(-1...

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