Hello, I have a problem. I have to solve this.
When I write all members (1/6 + 1/12, etc.) I can count it - true result is 5/12. But I have to use formulas. I count with:
1)(n/2)*(a1+an)
2) ((n-m+1)/2)*(am+an)
When I used it, I absolutely can't solve it, result are rubbish. Can someone please help me, and write it step by step how I have to count with any formulas? I trust It will be very easy for you.
Thank You very much!
PS: Sorry, if it is in bad thread.
When I write all members (1/6 + 1/12, etc.) I can count it - true result is 5/12. But I have to use formulas. I count with:
1)(n/2)*(a1+an)
2) ((n-m+1)/2)*(am+an)
When I used it, I absolutely can't solve it, result are rubbish. Can someone please help me, and write it step by step how I have to count with any formulas? I trust It will be very easy for you.
Thank You very much!
PS: Sorry, if it is in bad thread.
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