How do you Find the exponential growth function for a given data set?

Answer 1

Example

Find the exponential function #f(x)=Ca^x# that passes through the points #(1,15)# and #(3,375)#.
#{((1,15) => f(1)=Ca=15),((3,375) => f(3)=Ca^3=375):}#
By dividing #f(3)# by #f(1)#,
#{f(3)}/{f(1)}={Ca^3}/{Ca}=a^2={375}/{15}=25 => a=pm 5#
Since the base of an exponential function cannot be negative, we have #a=5#.

By plugging into the first equation,

#C cdot 5=15 => C=3#

Hence, the exponential function is

#f(x)=3 cdot 5^x#

I hope that this was helpful.

Sign up to view the whole answer

By signing up, you agree to our Terms of Service and Privacy Policy

Sign up with email
Answer 2

To find the exponential growth function for a given data set, follow these steps:

  1. Organize the Data: Arrange the data set into pairs of input-output values, typically denoted as (x, y) or (t, P), where x (or t) represents time or independent variable, and y (or P) represents the corresponding output or dependent variable.

  2. Plot the Data: Plot the data points on a graph to visualize the trend.

  3. Determine the Form: Exponential growth can be represented by the equation ( y = ab^x ), where ( a ) is the initial value (y-intercept) and ( b ) is the base of the exponential function.

  4. Linearize the Data (if necessary): If the data does not form a straight line when plotted on a linear scale, you may need to linearize it. For exponential growth, taking the natural logarithm of both sides of the equation can linearize the dataTo find the exponential growth function for a given data set, follow these steps:

  5. Organize the Data: Arrange the data set into pairs of input-output values, typically denoted as (x, y) or (t, P), where x (or t) represents time or independent variable, and y (or P) represents the corresponding output or dependent variable.

  6. Plot the Data: Plot the data points on a graph to visualize the trend.

  7. Determine the Form: Exponential growth can be represented by the equation ( y = ab^x ), where ( a ) is the initial value (y-intercept) and ( b ) is the base of the exponential function.

  8. Linearize the Data (if necessary): If the data does not form a straight line when plotted on a linear scale, you may need to linearize it. For exponential growth, taking the natural logarithm of both sides of the equation can linearize the ( \ln(y) = \ln(a) + x \ln(b) ). This transforms the exponential function into a linear equation of the form ( Y = mx + b ), where ( Y = \ln(y) ), ( m = \ln(b) ), and ( b = \ln(a) ).

  9. Determine Parameters: Use techniques such as linear regression to find the slope and intercept of the linearized data. The slope corresponds to ( \ln(b) ), and the intercept corresponds to ( \ln(a) ).

  10. Find the Exponential Function: Once you have determined the values of ( \ln(a) ) and ( \ln(b) ), you can find ( a ) and ( b ) by taking the exponential of these values. This yields the exponential growth function in the form ( y = ab^x ).

  11. Verify and Refine: Verify the exponential function by comparing it with the original data plot. Adjust parameters if necessary to achieve the best fit.

  12. Interpretation: Interpret the obtained exponential growth function in the context of the problem or data set.

Sign up to view the whole answer

By signing up, you agree to our Terms of Service and Privacy Policy

Sign up with email
Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

Not the question you need?

Drag image here or click to upload

Or press Ctrl + V to paste
Answer Background
HIX Tutor
Solve ANY homework problem with a smart AI
  • 98% accuracy study help
  • Covers math, physics, chemistry, biology, and more
  • Step-by-step, in-depth guides
  • Readily available 24/7