emmaward919 emmaward919
  • 07-07-2017
  • Mathematics
contestada

What is the value of the summation ∑i=14(2i+6i2)

Respuesta :

RickyChen
RickyChen RickyChen
  • 07-07-2017
You need to know the following:

sigma(i) = 1/2 * i * (i+1)

sigma(i^2) = 1/6 * i * (i+1) * (2i+1)

Therefore, the answer should be 14( i(i+1) + i * (i+1) * (2i+1)) = 14i(i+1)(2i+2) = 28i(i+1)^2
Answer Link

Otras preguntas

small particles of RNA and protein found throughout the cytoplasm in all cells; they produce proteins by following coded instructions from DNA a. Vacuoles b. Ri
Why did the early people need to find new food sources
$30 bat; 15% discount
What did Jan ingenhousz show?
Darius has 127 photos. Jillian has 467 photos. how many more photos does jillian have than Darius
Find a real number between 7 3/5 and 7 4/5
name two countries that appear to be larger than Sudan
If a rectangular poster has an area of (2x 2 − 9x + 10) square units, which of the following could describe the dimensions of the poster? A (2x − 2) units by (
What is 160,656 round to the nearest hundred thousand
A bicyclist started riding at 8:00a.m. the diagram below shows the distance the bicyclist had traveled at different times. What was the bicyclists average rate
good job