haifa's copy of Solve an exponential equation

Error

There was an error loading the page.

Contributors

haifa abd

History

○

haifa abd 6 years, 11 months ago

Created this as a copy of Solve an exponential equation.

Name	Status	Author	Last Modified
Solve an exponential equation	Ready to use	Frank Doheny	24/11/2017 08:15
Solve an exponential equation	draft	Nigel Atkins	01/03/2017 13:44
ecuacion exponencial	draft	Ricardo Monge	03/10/2017 22:18
Haifa's new exponential equation to solve for radioactivity	draft	haifa abd	03/05/2018 01:57
haifa's copy of Solve an exponential equation	draft	haifa abd	02/05/2018 05:01
Solve an exponential equation	draft	Xiaodan Leng	11/07/2019 01:00
Solve an exponential equation 2 (a e^(nx+c)=k)	draft	Yuri Anissimov	20/08/2020 01:27

There are 20 other versions that do you not have access to.

Question statement

Given the equation $f(x)=\var{a}e^{\var{m}x+\var{c}}$

Determine the value for $x$ that satisfies the relation $f(x)=\var{k}$

Give any introductory information the student needs.

			Name	Type	Generated Value

a	integer	19
m	number	0.8
c	number	0.3
k	integer	112

Automatically regenerate variables?

Name

Data type

Value

A random number between and (inclusive) with step size

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `integer`

Parts

Gap-fill
1. Gap Number entry
  Add

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

Input your answer correct to three decimal places.

$x =$ Unnamed gap

Advice

$\var{k}=\var{a}e^{\var{m}x+{\var{c}}}$

$\frac{\var{k}}{\var{a}}=e^{\var{m}x+\var{c}}$

$ln\left(\frac{\var{k}}{\var{a}}\right)=\var{m}x+\var{c}$

$ln\left(\frac{\var{k}}{\var{a}}\right)-\var{c}=\var{m}x$

$\frac{ln\left(\frac{\var{k}}{\var{a}}\right)-\var{c}}{\var{m}}=x$

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

There was an error which means the tests can't run:

Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet

This question is not used in any exams.

Loading...

Error

haifa's copy of Solve an exponential equation

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

haifa abd 6 years, 11 months ago

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

Loading...

Error

haifa's copy of Solve an exponential equation

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

haifa abd 6 years, 11 months ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`