Q3Short answerExercise 5.2
For the AP: –3, –7, –11, ..., can we find directly a30 – a20 without actually finding a30 and a20? Give reasons for your answer.
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Yes, a30 – a 20 30 – 20 d 10 d – 40 .
For the AP: –3, –7, –11, ..., can we find directly a30 – a20 without actually finding a30 and a20? Give reasons for your answer.
Yes, a30 – a 20 30 – 20 d 10 d – 40 .