Arithmetic sequence project
Storyboard-Text
- Yey that's great!! When will we meet?
- Yes of course.
- Oh! Hi Rosa, Actually i'm not doing fine. We're learning about Arithmetic Sequences in math and i'm so confused!!
- Oh! I have a friend name alexa who can teach you.
- How about later? I'll just text you is that okay?
- Hi Mark how are you?
- Hello! Alexa I don't know how to determine if a sequence is an arithmetic sequence let alone how to determine the pattern of one.
- Formula: An=A¹+(n-1)d
- The common difference? What does that mean?
- Hi! Mark , well you need to find the common difference of the pattern.
- 7,10,13,16
- d = 10-7 =3d = 13-10 =3d = 16-13 =3
- it is an arithmetic sequence.
- The common difference is the pattern between the number in an arithmetic sequence. So, if we have a sequence of numbers such as 7,10,13,16 we'd take the 2nd number and subtact the 1st number.
- so then, how can i solve arithmetic sequence
- d = 10-7 =3d = 13-10 =3d = 16-13 =3
- 7,10,13,16
- it is an arithmetic sequence.
- So the common difference of this of this sequence number would be 3 because of the common difference is the same throughout.
- 7,10,13,16
- Oh I Get it now!
- Oh ok!
- Here you can use formula An=A¹+(n-1)d
- You need to use formula like this An=a¹+(n-1)dA₁₂=7+(12-1)3A₁₂+(11)3A₁₂=7+33A₁₂=40
- 7,10,13,16
- Yey! Thank You! Alexa, Its so fun to learn arithmetic sequence
- Formula: An=A¹+(n-1)d
- Now you know how to solve arithmetic sequence
- Your Welcome Mark!
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