Module 9 Review Padlet by Cooper Bargabus https://padlet.com/bargabusc0255/q1q9v5q2svsq Linear, Exponential, and Quadratic Functions en-us 2017-04-27 16:59:40 UTC 2017-04-27 17:34:58 UTC hello@padlet.com Writing Quadratic Equations bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168698843 This video covers how to write quadratic equations in recursive form, and gives a few examples . ]]> 2017-04-27 17:03:49 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168698843 Quadratic bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168699520 Has a constant 2nd difference ]]> 2017-04-27 17:06:05 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168699520 Table bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168700024 n | f(n)
1 | -3
2 | 0
3 | 5
4 | 12
5 | 21

Is quadratic because it has a constant 2nd difference of 7

]]> 2017-04-27 17:07:32 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168700024 Recursive bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168700390 f(1)=-3
f(n)=f(n-1)+2n-1
First, you have to find f(1). Then, you have to find how to get from f(n-1) to f(1)]]> 2017-04-27 17:08:40 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168700390 Explicit bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168700475 f(n)=n^2-4
In order to find the explicit, you have to find the difference between f(n) and f(n-1).]]> 2017-04-27 17:08:56 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168700475 Linear bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168704724 Has a constant 1st difference ]]> 2017-04-27 17:21:48 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168704724 Table bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168704933 1   |   -3
2   |   -7
3   |   -11
4   |   -15
5   |   -19

this table is linear because the first difference is constant, it subtracts 4 every time.
]]> 2017-04-27 17:22:33 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168704933 Recursive bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168706498  f(1)=-3   f(n)=f(n-1)-4]]> 2017-04-27 17:27:04 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168706498 Explicit bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168706667 f(n)=-4n+1]]> 2017-04-27 17:27:37 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168706667 Exponential bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168707991 Has a common ratio]]> 2017-04-27 17:30:49 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168707991 Recursive bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168708167 To find the recursive equation you need to find the first difference between two y values. In this model the recursive equation is, f(0)=2
f(n)=f(n-1)*2



]]> 2017-04-27 17:31:27 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168708167 Explicit bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168708417 To get this explicit equation you must find how to get from x to y. The explicit equation for the model above is, 
f(n)= 2^n+1

]]> 2017-04-27 17:32:14 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168708417 Table bargabusc0255 https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168708619       n          |         F(n)
      0          |          2
      1          |          4
      2          |          8
      3          |          16 

Is exponential because it has a common ratio of 2
]]> 2017-04-27 17:32:59 UTC https://padlet.com/bargabusc0255/q1q9v5q2svsq/wish/168708619