Consider the sum of the first n integers. For what value of n will the sum first exceed 1000? need help
Follow Math Help Forum on Facebook and Google+
Originally Posted by nikk Consider the sum of the first n integers. For what value of n will the sum first exceed 1000? need help hint: the sum of the first n positive integers is given by
Originally Posted by nikk Consider the sum of the first n integers. For what value of n will the sum first exceed 1000? need help Solve
Last edited by Mathstud28; January 14th 2009 at 09:50 PM. Reason: Typo
is it the formula both of you come from this Sum(n) = 1+2+3+4 ....... +n = n(n+1)/2 ???
my ans is = 45 can u reconfirm it??
The formula for summing integers from 1 to n is . That should get you started. edit: How did I miss all those posts? Yes OP the answer is 45
Originally Posted by Jameson The formula for summing integers from 1 to n is . That should get you started. edit: How did I miss all those posts? Yes OP the answer is 45 tq for your time
Originally Posted by nikk tq for your time in regards to the title of this post, note that you could have derived this formula by the formula for the sum of the first n terms of an arithmetic sequence.
View Tag Cloud