Friday

September 19, 2014

September 19, 2014

Posted by **Luis** on Tuesday, January 5, 2010 at 11:23pm.

2+8+18+32+50+72

- Calculus -
**MathMate**, Wednesday, January 6, 2010 at 12:11amCalculate the difference between successive terms of the sum. The differences are the terms you need to add together to make the sum.

Sum: 2,8,18,32,50,72...

diff: 2,6,10,14,18,22...

0th term=2

1st term = 6

2nd term = 10

The rule is therefore 2+4i

So check if Σ2+4i works for you. i starts from zero.

- Correction -
**MathMate**, Wednesday, January 6, 2010 at 12:19amMy answer above applies if the list of numbers were successive sums.

Go with Reiny's answer:

http://www.jiskha.com/display.cgi?id=1262752887

**Answer this Question**

**Related Questions**

Calculus - Express the following in Sigma notation 2+8+18+32+50+72

math - I just need help with this. Write the series in sigma notation. 1/4 + 1/2...

math - I just need help with this. Write the series in sigma notation. 1/4 + 1/2...

Maths - Express the sum using summation notation: 1 - 1/2 + 1/3 - 1/4 + 1/5...

Maths - Express the sum using summation notation: 1 - 1/2 + 1/3 - 1/4 + 1/5...

Maths - Express the sum using summation notation: 1 - 1/2 + 1/3 - 1/4 + 1/5...

Pre-CalcPlease check - Please check: 1.Write in expanded form: this is a sigma ...

calculus - write the sigma notation. 5^2+6^2+7^2+...+14^2 You could use capatil ...

Reiny or Damon or Bobpursley - Express the series 11 + 18 + 27 +...+ 171 using ...

further mathematics - The roots of the eqn, x^4 + px^3 + qx^2 + rx + s = 0 where...