SequencesDay6ExplicitGeometricFormula序列6天显式的几何公式

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Warm Up,Week 5,12,7,2,-3,-8,.,1),t,n,=,2),t,n-1,=,n=3,3),t,6,=,Re 1,12,7,2,-3,-8,.,a,n,=,d,n+,a,0,d=-5,a,0,=17,a,n,=,-5,n,+17,Explicit Arithmetic Formula,Geometry,Sequences Day 6,I will write an explicit formula for a geometric sequence of numbers.,Explicit Formula:,Geometric,a,n,=a,1,r,n-1,Ex 1,81,27,9,3,1,.,Common Ratio:,3,2,8,32,128,512,.,Common Ratio:,4,Ex 2,Ex 3,n,t,1,Ratio(r),t,n,1,2,3,4,5,2,2,6,2,3,18,2,3,3,54,2,3,3,3,2,3,3,3,3,2,6,18,54,.,t,1,r,n-1,=,t,n,t,5,=,2,(,3,),5-1,t,5,=2,3,4,Ratio(r)=3,t,n,=t,1,r,n-1,t,5,=2,81,t,5,=162,162,Ex 4,1,3,5,7,9,11,13,15,1,2,4,8,.,ratio=2,t,1,=,t,n,=,t,1,r,n-1,t,n,=,(2),n-1,3,15,75,375,.,Ex 5,Ratio=,5,t,1,=,3,t,n,=,t,1,r,n-1,t,n,=,3,5,n-1,Recursive,Explicit,t,n,=,r,t,n-1,t,n,=,5,t,n-1,Do:1,What is the explicit formula?,Assignment:,Handouts 1.3 Day 2 Explicit Formulas,1,4,16,64,.,Do:2,What is t,11,?,