5 Min Bell Ringer: Recursive/Explicit Sequences

On a scale of 1-5, 1 meaning "Bad - I have no clue what recursive sequences are" to 5 meaning "Great - I got it completely," how would you rate your understanding of this week's lessons?

• 1

• 2

• 3

• 4

• 5

A formula that requires the computation of all previous terms to find the value of a_n.

• Explicit Formula

• Recursive Formula

• Arithmetic Formula

• Geometric Formula

Tags

CCSS.HSF.BF.A.2

Write the recursive formula of 13, 9, 5...

• a_n=a_n-1-4

• a_n=a_n-1+3

• a_n=a_n-1-5

• a_n=a_n-1+4

Tags

CCSS.HSF.BF.A.2

What is the a_n-1 if the a_n=5?

• 7

• 6

• 4

• 72

Tags

CCSS.HSF.BF.A.2

Given the recursive formula, find the first four terms:
a_n = a_n-1 + 5
a₁ = -16

• -16, -21, -26, -31
• 5, -11, -27, -43
• -16, -80, -500, -200
• -16, -11, -6, -1

Tags

CCSS.HSF.BF.A.2

Write the recursive formula for 6, 17, 28, 39, 50....

• a_n=a_n-1+11
  a₁=6
• a_n=a_n-1-4
  a₁=6
• a_n=a_n-1+9
  a₁=6
• a_n=a_n-1+6
  a₁=6

Tags

CCSS.HSF.BF.A.2

Write the explicit formula for the geometric sequence.

• a_n = 4(3)^n-1
• a_n = 3(4)^n-1
• a_n = -4(3)^n-1
• a_n = 3(-4)^n-1

Tags

CCSS.HSF.BF.A.2

Write the explicit formula for the geometric sequence.

• a_n = 2*(100)^n-1

• a_n = 100*(2)^n-1

• a_n = 100*(1/2)^n-1

• a_n = (1/2)*(100)^n-1