7
QuizMultiple Choice
Summation Notation
Question 7 of 10 • Precalculus
Wyatt claims that is equivalent to . Which statement about his claim is true in every aspect?
Answer
A
true, because (Wyatt used properties of exponents to simplify the expression.)
B
true, because the gives 9 and will cause the signs to alternate (Wyatt knows that negative exponents alternate the signs.)
C
false, because a base of and 9 cannot be combined into a single base for a power (It does not matter that Wyatt dropped the negative.)
D
false, because when combined in this manner, the alternating signs of the series are lost (Wyatt ignored the negative in the first factor.)