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If absz=1 and z ne+-1 then all the value...

If `absz=1` and `z ne+-1` then all the values of `z/(1-z^2)` lie on

A

a line not passing through the origin

B

the line y = x

C

the x-axis

D

the y-axis

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2021-MULTIPLE CHOICE QUESTION
  1. Let a, b, c be real numbers, each greater than 1, such that (2)/(3)...

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  2. Consider the real valued function h:{0, 1, 2 …..100} to R such that h(...

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  3. If absz=1 and z ne+-1 then all the values of z/(1-z^2) lie on

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  4. If z be a complex number satisfying z^4+z^3+2z^2+z+1=0 then absz is eq...

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  5. Let alpha and beta be the roots of the equation x^2-6x-2=0. If an=alph...

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  6. For x in R, x ne -1, if (1+x)^(2016)+x(1+x)^(2015)+x^(2)(1+x)^(201...

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  7. Five letter words, having distinct letters, are to be constructed usin...

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  8. What is the number of ways in which an examiner can assign 10 marks to...

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  9. The digit in the unit's place of the number 1! + 2! + 3! +.......+ 99!...

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  10. If M is a 3xx3 matrix such that (0 1 2)M = (1 0 0), (3 4 5) M = (0 1 0...

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  11. Let A = [[0,-tanalpha//2],[tanalpha//2,0]] and I, the indentity matrix...

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  12. Let A and B be two non-singular skew symmetric matrices such that AB =...

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  13. If a(n)( gt 0) be the n^(th) term of a G.P. then |(log a(n), log a(...

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  14. Let A, B, C be three non-void subsets of set S. Let (A cap C) cup (B c...

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  15. Let T & U be the set of all orthogonal matrices of order 3 over R & th...

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  16. Four persons A, B, C and D throw an unbiased die, turn by turn, in suc...

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  17. The mean and variance of a binomial distribution are 4 and 2 respectiv...

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  18. Let S(n)=cot^(-1)2 +cot^(-1)8 +cot^(-1)18 +cot^(-1)32+…. to n^(th) te...

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  19. If a gt 0, b gt 0 then the maximum area of the parallelogram whose thr...

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  20. Let A be the fixed point (0, 4) and B be a moving point on x-axis. Let...

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