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- Applications of Exponential and Logarithmic Functions

Still Confused?

Try reviewing these fundamentals first.

Still Confused?

Try reviewing these fundamentals first.

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Get Started NowStart now and get better math marks!

Get Started NowStart now and get better math marks!

Get Started Now- Lesson: 19:41

The growth/decay factor "(1+r)" dictates the rate of exponential growth and decay. We will work on questions related to growth/decay factor in this lesson.

Related concepts: Derivative of inverse trigonometric functions, Derivative of logarithmic functions,

exponential growth/decay: ${ A_f = A_i (f)^{time\over period}}$

${A_f}$: final amount

${A_i}$: initial amount

${f }$ : growth/decay factor

half-time$\to f = {1\over 2}$

triple$\to f = {3}$

ten-fold$\to f = {10}$

increase by 10%$\to f = {({1 + {10\over 100}}) } { = 1.1}$

decrease by 8%$\to f = {({1 - {8\over 100}}) } { = 0.92}$

${time}$ : total time given

${period}$ : every length of time

${A_f}$: final amount

${A_i}$: initial amount

${f }$ : growth/decay factor

half-time$\to f = {1\over 2}$

triple$\to f = {3}$

ten-fold$\to f = {10}$

increase by 10%$\to f = {({1 + {10\over 100}}) } { = 1.1}$

decrease by 8%$\to f = {({1 - {8\over 100}}) } { = 0.92}$

${time}$ : total time given

${period}$ : every length of time

- 1.triple growth

A certain type of bug can triple its population every 10 years.

How many bugs will there be in 50 weeks if there are 76 bugs today?

9.

Applications of Exponential and Logarithmic Functions

9.1

Exponential growth and decay by a factor

9.2

Exponential decay: Half-life

9.3

Exponential growth and decay by percentage

9.4

Finance: Compound interest

9.5

Continuous growth and decay

9.6

Logarithmic scale: Richter scale (earthquake)

9.7

Logarithmic scale: pH scale

9.8

Logarithmic scale: dB scale

9.9

Finance: Future value and present value

We have over 680 practice questions in Grade 12 Math for you to master.

Get Started Now9.1

Exponential growth and decay by a factor

9.2

Exponential decay: Half-life

9.3

Exponential growth and decay by percentage

9.4

Finance: Compound interest

9.5

Continuous growth and decay

9.6

Logarithmic scale: Richter scale (earthquake)

9.7

Logarithmic scale: pH scale

9.8

Logarithmic scale: dB scale

9.9

Finance: Future value and present value