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lim(xrarr1) (1+cos pix)cot^2pi x is equa...

`lim_(xrarr1) (1+cos pix)cot^2pi x` is equal to

A

1

B

`-1`

C

`1//2`

D

`-1//2`

Text Solution

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The correct Answer is:
C
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OBJECTIVE RD SHARMA ENGLISH-LIMITS-Exercise
  1. The value of lim(xrarr0) (a^x-b^x)/(x) ,is

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  2. The value of lim(xrarr0) (e^x-(x+x))/(x^2),is

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  3. lim(xrarr1) (1+cos pix)cot^2pi x is equal to

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  4. The value of lim(xto0) (int(0)^(x)tdt)/(xtan (x+pi)) is equal to

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  5. The value of lim(xrarroo) ((x^2+6)/(x^2-6))^(x) is given by

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  6. If [x] denotes the greatest integer less than or equal to x,then the v...

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  7. Let alpha and beta be the distinct roots of ax^(2) + bx + c = 0. Then ...

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  8. If f(x)={(xsin,((1)/(x)),xne0),(0,,x=0):} Then, lim(xrarr0) f(x)

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  9. lim(xto-pi)(|x+pi|)/(sin x) is

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  10. If lim(x->oo) (sqrt(x^2-x+1)-ax-b)=0 then the value of a and b are giv...

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  11. lim(xto1) (sum(r=1)^(n)x^(r)-n)/(x-1) is equal to

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  12. lim(x->pi/4)(2sqrt(2)-(cosx+sinx)^3)/(1-sin2x)=

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  13. The value of lim(n->oo)(1.sum(r=1)^n(r)+2.sum(r=1)^(n-1)(r)+3sum(r=1)^...

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  14. The value of lim(xtooo) {(1)/(3)+(2)/(21)+(3)/(91)+...+(n)/(n^4+n^2+1...

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  15. The value lim(xrarr pi//2)(sinx)^(tanx), is

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  16. The value of lim(xrarroo) (5^(x+1)-7^(x+1))/(5^x-7^x),is

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  17. The value of lim(xrarr3)(3^x-x^3)/(x^x-3^3), is

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  18. lim(n->oo)[log(n-1)(n)logn(n+1)*log(n+1)(n+2).....log(n^k-1) (n^k)] i...

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  19. The value of underset(mtooo)lim("cos"(x)/(m))^(m) is

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  20. The value of lim(xrarroo)(sqrt(n^2+1)+sqrt(n))/((n^4+n)^(1/4)+4sqrt(n)...

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