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Home > CCA > Chapter 8 > Lesson 8.1.4 > Problem 8-40

8-40.
  1. A sequence starts –3, 1, 5, 9… Homework Help ✎

    1. If you wanted to find the 50th term of the sequence, would an explicit equation or a recursive equation be more useful?

    2. Write the equation in “first term” form as you did in problem 7-108.

    3. What is the 50th term of the sequence?

    4. Write the explicit equation for the sequence 3, 2 , 2, 2, 1... in “first term” form.

Recall the definitions of explicit and recursive equations.

Explicit.

Refer to problem 7-108 to recall what the first term form means.

t(n) = −3 + 4(n − 1)

Insert 50 for n in the equation you found in part (b).