The summation formulae Σr, Σr^2, Σr^3: check 1
Difficulty: ★★☆Maths4U Original · Short practice
Let \(n=12,\ S=\sum_{r=1}^n(3r^2+10r+1)\). Use the standard summation identities.
Find the sum of r from 1 to n.
Enter one number or fraction. Use at least six decimal places when needed; a distribution calculator may be used for probabilities.
The summation formulae Σr, Σr^2, Σr^3: review variant 1
Difficulty: ★★☆Maths4U Original · Short practice
Let \(n=13,\ S=\sum_{r=1}^n(4r^2+11r+1)\). Use the standard summation identities.
Find the sum of r from 1 to n.
Enter one number or fraction. Use at least six decimal places when needed; a distribution calculator may be used for probabilities.
The summation formulae Σr, Σr^2, Σr^3: check 2
Difficulty: ★★☆Maths4U Original · Short practice
Let \(n=13,\ S=\sum_{r=1}^n(4r^2+11r+1)\). Use the standard summation identities.
Find the sum of r squared from 1 to n.
Enter one number or fraction. Use at least six decimal places when needed; a distribution calculator may be used for probabilities.
The summation formulae Σr, Σr^2, Σr^3: review variant 2
Difficulty: ★★☆Maths4U Original · Short practice
Let \(n=14,\ S=\sum_{r=1}^n(5r^2+12r+1)\). Use the standard summation identities.
Find the sum of r squared from 1 to n.
Enter one number or fraction. Use at least six decimal places when needed; a distribution calculator may be used for probabilities.
The summation formulae Σr, Σr^2, Σr^3: check 3
Difficulty: ★★☆Maths4U Original · Short practice
Let \(n=14,\ S=\sum_{r=1}^n(5r^2+12r+1)\). Use the standard summation identities.
Find S.
Enter one number or fraction. Use at least six decimal places when needed; a distribution calculator may be used for probabilities.
The summation formulae Σr, Σr^2, Σr^3: review variant 3
Difficulty: ★★☆Maths4U Original · Short practice
Let \(n=15,\ S=\sum_{r=1}^n(2r^2+13r+1)\). Use the standard summation identities.
Find S.
Enter one number or fraction. Use at least six decimal places when needed; a distribution calculator may be used for probabilities.
The summation formulae Σr, Σr^2, Σr^3: check 4
Difficulty: ★★☆Maths4U Original · Short practice
Let \(n=15,\ S=\sum_{r=1}^n(2r^2+13r+1)\). Use the standard summation identities.
Find the sum of r cubed from 1 to n.
Enter one number or fraction. Use at least six decimal places when needed; a distribution calculator may be used for probabilities.
The summation formulae Σr, Σr^2, Σr^3: review variant 4
Difficulty: ★★☆Maths4U Original · Short practice
Let \(n=16,\ S=\sum_{r=1}^n(3r^2+14r+1)\). Use the standard summation identities.
Find the sum of r cubed from 1 to n.
Enter one number or fraction. Use at least six decimal places when needed; a distribution calculator may be used for probabilities.