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If a, x are real numbers and |a|lt 1, |x...

If a, x are real numbers and `|a|lt 1, |x|lt 1`, then `1+(1+a)x+(1+a+a^(2))x^(2)+…..oo` is equal to

A

`(1)/((1-a)(1-ax))`

B

`(1)/((1-a)(1-x))`

C

`(1)/((1-x)(1-ax))`

D

`(1)/((1+ax)(1-a))`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2016-MULTIPLE CHOICE QUESTIONS
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  2. If x is a positive real number different from 1 such that log(a)x,log(...

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  3. If a, x are real numbers and |a|lt 1, |x|lt 1, then 1+(1+a)x+(1+a+a^(2...

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  4. If log(0.3)(x-1)lt log(0.09)(x-1), then x lies in the interval

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  5. The value of sum(n=1)^(13)(i^(n)+i^(n+1)),i=sqrt(-1) is

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  6. If z(1), z(2), z(3) are complex numbers such that |z(1)|=|z(2)|=|z(3)|...

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  7. If p, q are the roots of the equation x^(2)+px+q=0, then

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  8. The number of values of k for which the equation x^(2)-3x+k=0 has two ...

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  9. The number of ways in which the letters of the word ARRANGE can be per...

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  10. If, (1)/(""^(5)C(r ))+(1)/(""^(6)C(r ))=(1)/(""^(4)C(r )), then the va...

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  11. For +ve integer n, n^(3)+2n is always divisible by

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  12. The coefficient of x^17in the expansion of(x-1)(x-2)(x-3)….(x-18) is

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  13. 1+""^(n)C(1)cos theta+""^(n)C(2)cos 2theta +…+""^(n)C(n) cos n theta e...

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  14. If x, y and z be greater than 1, then the value of |(1,log(x)y,log(x)z...

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  15. Let A is a 3xx3 matrix and B is its adjoint matrix. If |B|=64, then |A...

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  16. Let (("cos"(pi)/(4),-"sin"(pi)/(4)),("sin"(pi)/(4),"cos"(pi)/(4))) and...

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  17. Let R be a relation defined on the set Z of all integers and xRy when ...

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  18. If A={3^(n)-2n-1:n in N} and B={4(n-1):n in N}, then

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  19. If the function f : R to R is defined by f(x)=(x^(2)+1)^(35)AA x in R,...

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  20. Standard Deviation of n observations a(1), a(2), a(3),….a(n) is sigma....

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