Series: sigma notation and special sums

Question 1 of 10

Find Σ_{r=1}^{n} (3r² − 2r) in terms of n and evaluate it for n = 10.

Question 2 of 10

Σ r² = (Σ r)².

Question 3 of 10

Evaluate Σ (4r + 3) from r = 1 to 9.

Question 4 of 10

The notation Σ is used to

Question 5 of 10

Evaluate Σ r from r = 1 to 10.

Question 6 of 10

Evaluate Σ (5r + 4) from r = 1 to 6.

Question 7 of 10

Evaluate Σ r² from r = 1 to 6.

Question 8 of 10

Evaluate Σ r from r = 1 to 5.

Question 9 of 10

Evaluate Σ r from r = 1 to 4.

Question 10 of 10

Evaluate Σ (4r + 3) from r = 1 to 7.