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Find the sum of the terms from the (n + 1) th to the m th term inclusive of an arithmetical progression whose
first term is a and whose second term is b.
If m = 13, n = 3 and the sum is 12a, find the ratio b: a.
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Feb 8, 2018
If n Cr, denotes the coefficient of xr in the expansion of (1 + x) n, prove that:
n Cr + 2(n Cr+1) + n Cr+2 = n+2 Cr+2
Jan 10, 2018
Sum of Terms:Sum of n terms for -3n^2+2n+5
Sum of n terms for -3n^2+2n+5
Dec 4, 2017
The sum of the last 3 terms of a geometric progression having n terms is 1024 times the sum of the first 3 terms of the progression. If the third term is 5 find the last term.
Nov 10, 2017
Express a4(b - c) + b4 (c - a) + c4 (a - b) as the product of four factors.
(b-c),(c-a) and (a-b) are products of this expression
Oct 20, 2017
If x = log a (bc), y = log b (ca) and z = log c (ab) prove that
If x = loga(bc), y = logb(ca) and z = logc(ab) prove that
x + y + z = xyz - 2.
Sep 29, 2017
Find xy and hence solve for all values of x and y
Hi Can you show steps in solving this problem:
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Jul 23, 2017