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NEW JOYTHI PUBLICATION-SEQUENCES AND SERIES -QUESTIONS FROM COMPETITIVE EXAMS
- if 1,log(9)(3^(1 - x) + 2),log(3)[4.3^(x) - 1] are in A.P. then x equa...
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- 1^(3) - 2^(3) + 3^(3) + 4^(3) + .... + 9^(3) =
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- Sum of infinite number of terms in GP is 20 and sum of their square is...
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- The value of 2^(1/4), 4^(1/8), 8^(1/16) ...... infty is
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- Fifth term of a GP is 2, then the product of 1ts 9 terms is
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- If the system of linear equations x + 2ay + az = 0,x + 3by + bz = 0,x ...
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- Let f(x) be a polynomial function of second degree. If f(1) = f(-1) an...
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- The sum of the series 1/1.2 - 1/2.3 + 1/3.4 … upto infty is equal to
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- If x(1),x(2),x(3)as well as y(1),y(2),y(3) are in geometric progressio...
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- Let T, be the r^(th) term of an A.P. whose first term is a and common ...
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- The sum of first n terms of the series 1(2) + 2.2^(2) + 3^(2) + 2.4^(2...
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- The sum of series 1/2! + 1/4! + 1/6! + …….. is
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- If the coefficients of r^(th),(r + 1)^(th) and (r + 2)^(th) terms in t...
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- If 0 lt phi lt (pi)/(2) , x= sum(n=0)^(oo) cos^(2n) phi ,y sum (n...
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- If a(1), a(2), a(3), ………, a(n)….. are in G.P., then the determinant De...
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- Leta(1), a(2), a(3), ………be terms of an A.P. if (a(1) + a(2) + ...... a...
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- If a(1), a(2) , ……. A(n) are in H.P., then the expression a(1)a(2) + a...
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- The sum of the series 1/(2!) - 1/(3!) + 1/(4!) - …….. upto infinity is
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- In a geometric progression consisting of positive terms each term equa...
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- The first two terms of a geometric progression add up to 12. The su...
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