exponential function foldable...gg effy.toecay output y intercept or or ending initial valve valve...

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Exponential Function Foldable Tinnel Iterations Growth Decay 0 factor K Eng.on Put Initial Value 41 or e y intercept Y fTime gg Effy.to ecay Output Y intercept Or Or ending Initial Valve valve

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Page 1: Exponential Function Foldable...gg Effy.toecay Output Y intercept Or Or ending Initial Valve valve Writing an Equation from Input-Output pairs The height h(n) of a ball dropped is

Exponential Function Foldable

TinnelIterations

Growth Decay0 factorK

Eng.on Put Initial Value41 ore

y intercept

Y fTime

gg Effy.toecay

Output Y interceptOr Or

ending InitialValve valve

Page 2: Exponential Function Foldable...gg Effy.toecay Output Y intercept Or Or ending Initial Valve valve Writing an Equation from Input-Output pairs The height h(n) of a ball dropped is

Writing an Equation from Input-Output pairs The height h(n) of a ball dropped is an exponential function of the number of bounces n. On the first bounce, a certain ball reached a height of 15 inches. On it's second bounce, the ball reached a height of 7.5 inches. Write an equation for the height of the ball, in inches, as a function of the number of bounces.

Divide a function value by the previous function value (heights) to find the constant 1.ratio b.

2. Use the value of b and a known ordered pair to find the value of a (initial height). 3. Write your exponential function using your value of a and b.

f x f x Doutput output

tf fi's b f L

xflxt a.by15 a 2

IS zaa 30

Hx 30 CI

iiib I

fix Ka a 30

Is _a a

fix 530 HT

Page 3: Exponential Function Foldable...gg Effy.toecay Output Y intercept Or Or ending Initial Valve valve Writing an Equation from Input-Output pairs The height h(n) of a ball dropped is

Use 2 points to write an equation for each function.

Divide a function value by the previous function value to find the constant ratio b. 1. 2. Use the value of b and a known ordered pair to find the value of a (initial height). 3. Write your exponential function using your value of a and b.

f o I

f C D 2 b L

Hx abl actI a Ia I

f x I

lb

b I I s

a y intercept finals9 1 2 a I

i

fat I

Page 4: Exponential Function Foldable...gg Effy.toecay Output Y intercept Or Or ending Initial Valve valve Writing an Equation from Input-Output pairs The height h(n) of a ball dropped is

f D 2f 6 3 b 32

f x a b

3 a E3 1 a

3 a

f G 3 5

ffxt a.bb EIII.IE

X Y3

Yintercept I 2

0,37 2 s Da 3

3 Estb must be

t.IE Etb4eauation2

q 4l 2 a 44 4fixttiHYa h s a

Page 5: Exponential Function Foldable...gg Effy.toecay Output Y intercept Or Or ending Initial Valve valve Writing an Equation from Input-Output pairs The height h(n) of a ball dropped is

is's I s

fix 1 5 FIT