Q. a(n)=23(−2)n−1What is the 3rd term in the sequence?
Step 1: Understand sequence formula: Understand the sequence formula and identify the term to find.The sequence is defined by the formula a(n)=23(−2)n−1. We need to find the 3rd term, which means we will substitute n with 3 in the formula.
Step 2: Substitute n with 3: Substitute n with 3 in the sequence formula.a(3)=23(−2)3−1
Step 3: Calculate the exponent: Calculate the exponent part of the formula. (−2)(3−1)=(−2)2
Step 4: Evaluate the exponent: Evaluate the exponent.(−2)2=4
Step 5: Multiply by the coefficient: Multiply the result of the exponentiation by the coefficient.(23)×4=3×2=6
Step 6: Final answer: Write down the final answer.The 3rd term in the sequence is 6.