Learn to find the first four terms of a sequence with alternating signs

The video tutorial explains how to find the first four terms of a sequence by substituting term numbers into a formula. It highlights the importance of understanding how negative numbers behave when raised to different powers, emphasizing that even powers yield positive results while odd powers yield negative results. The tutorial also discusses the concept of alternating signs in sequences and concludes with a summary of key points.

What is the first step in finding the value of a term in a sequence?

• Multiply the term number by 2

• Subtract 1 from the term number

• Substitute the term number into the formula

• Divide the term number by 2

What happens when a negative number is raised to an even power?

• The result is the same as the base

• The result is always negative

• The result is always positive

• The result is zero

How does raising a negative number to an odd power affect the result?

• The result is always negative

• The result is always positive

• The result is zero

• The result is the same as the base

Why is understanding alternating signs important in sequences?

• It helps in finding the sum of the sequence

• It is crucial for determining the rule of the sequence

• It ensures the sequence is finite

• It simplifies the calculation of terms

What is the value of the fourth term in the sequence discussed?

• 2/3

• 3/4

• 1/2

• 4/5