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CBSE Class 11-science Answered

a)find som of nth term of the series 1+5+12+22+35..... B)find the sum of series 1+2sqr+3.3sqr+5.4sqr+7.5sqr+..nth term
Asked by abhishek abhi | 27 Nov, 2010, 05:15: PM
answered-by-expert Expert Answer

now find the values using formula for sum of squares of  first n natural numbers, sum of first n natural numbers etc..
Answered by | 28 Nov, 2010, 10:30: AM

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