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Find the sum of n terms of the series wh...

Find the sum of `n` terms of the series whose nth term is `T(n)=tanx/(2^n)xxsecx/(2^(n-1)dot)`

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CENGAGE PUBLICATION-SEQUENCES AND SERIES-All Questions
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  2. If (p+q)t h term of a G.P. is a and its (p-q)t h term is b where a ,b ...

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  3. Find the sum of n terms of the series whose nth term is T(n)=tanx/(2^n...

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  4. Evaluate, sum(i = 0)^iinfty sum(j = 0)^infty sum(k = 0)^infty 1/(3^i c...

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  5. The first trem of a GP is -3 and the square of the second term is equa...

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  6. If log(2)(5.2^(x)+1),log(4)(2^(1-x)+1) and 1 are in A.P,then x equals

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  7. Find the geometric series whose 5th and 8th terms are 80 and 640 respe...

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  8. 0ltthetaltpi/2, if x=sum(n=0)^inftycos^(2n)theta,y=sum(n=0)^inftysin^(...

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  9. The real numbers x1, x2, x3 satisfying the equation x^3-x^2+b x+gamma=...

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  10. Let a, b, c, d be real numbers in G.P. If u, v, w satisfy the system...

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  11. The 5th, 8th and 11th terms of a GP are a,b,c respectively. Show that...

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  12. If (log)3 2,(log)3(2^x-5)a n d(log)3(2^x-7/2) are in arithmetic progre...

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  14. Find the centre and radius of the circle: (x+5)^2+(y-3)^2=20

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  19. The sum of 50 terms of the series 1+2(1+1/(50))+3(1+1/(50))^2+ is giv...

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  20. The sum of 50 terms of the series 3/(1^2)+5/(1^2+2^2)+7/(1^2+2^2+3^2)+...

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