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a series is given by the following form ...

a series is given by the following form :
`1+(x+x^(2))+(x^(3)+x^(4)+x^(5))+(x^(6)+x^(7)+x^(8)+x^(9))+...+` find the first term and sum of the terms in the n th bracket.

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Verified by Experts

The correct Answer is:
`x^((n(n-1))/(2)) and x^((n(n-1))/(2))* (x^(n)-1)/(n-1)`
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CHHAYA PUBLICATION-MISCELLANEOUS EXAMPLES-ALGEBRA
  1. If S(1), S(2), S(3),...S(n) are the sums of infinite geometric series,...

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  2. If u(r)=(1)/(r!) then show that u(0)u(n)+8u(1)+u(n-1)+8^(2)u(2)u(n-2...

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  3. a series is given by the following form : 1+(x+x^(2))+(x^(3)+x^(4)+x...

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  4. If x= cos theta+i sin theta and 1+ sqrt(1-a^(2))=na, show that, (a)/(...

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  5. Show that (a+ omega +omega ^(2))(a+omega ^(2)+omega ^(4))(a+omega ^(4)...

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  6. Let z and omega tow complex number. If |z|= |omega| and areg (z) +arg...

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  7. If z(1)+z(2) are two complex number and |(barz(1)-2bar z(2))/(2-z(1)ba...

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  8. If x+iy moves on the line 3x+4y+5=0, prove that the minimum value of ...

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  9. If |z^(2)|=9|z|, find the maximum and minimum values of |z|.

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  10. Find the greatest value of |z| when |z-(6)/(z)|=2,z being a complex nu...

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  11. Find the least value of |z+(1)/(z)| if |z| ge 3 (z being a complex ...

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  12. If the roots of the equation ix^(2)-(b^(2)+c^(2))x+(c^(2)+d^(2))^(2)=0...

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  13. If one root of the equation ax^(2)-2ibx-ic=0 be square of the other, t...

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  14. Solve (7y^(2)+1)/(y^(2)-1)-4 ((y^(2)-1)/(7y^(2)+1))=-3

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  15. Solve (x-(x)/(x+1))^(2)+2x((x)/(x+1))=3

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  16. If alpha and beta are the roots of ax^(2)+bx+cid=0 find the equation ...

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  17. Show that, 3^(n)-(n)/(1!)3^(n-1)+(n(n-1))/(2!)3^(n-2)-...+(-1)^(n)="...

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  18. Find the coefficient of x^(-5) in ""^(n)C(0)-""^(n)C(1) ((2x-1)/(x)...

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  19. Find the degree of theexpansion, {x+(x^(3)-1)^(1//2)}^(5)+{x-(x^(3)-...

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  20. Find the term independent of x in the expansion, ((x+1)/(x^(2//3)-x^(...

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