MATLAB Answers


Not sure how to use the disp function and num2str function from this point. Can someone help me out here?

Asked by Brian
on 4 Mar 2013
The Richter scale is a measure of the intensity of an earthquake.  The energy E(in gigajoules) released by an earthquake is related to the magnitude M on the Richter scale as follows.  
program the formula for E in a script file. 
Use the input function to prompt the use to enter a value of M.  The prompt should say "Please enter a Value M on the Richter scale, then press enter".  use the disp function and the num2str function to display the numerical value of the energy E with the text "The energy released is:", followed by the value of E, followed by the text "Gigajoules."

So far I have

M=input('Please Enter a Value of M on the Richter scale, then press enter')

How do I do this problem from this point?



No products are associated with this question.

2 Answers

Answer by Walter Roberson
on 4 Mar 2013
 Accepted answer


[ 'Pi r^', num2str(3) ]


Answer by Image Analyst
on 4 Mar 2013

You look up disp() and num2str() in the help, though personally I think fprintf() is a much better way to display things in the command window.


on 4 Mar 2013

I've done that, I'm just not sure how to use them in order to achieve my desired result.

But we can't just give you the answer to your homework outright. The help should have examples you can adapt.

Join the 15-year community celebration.

Play games and win prizes!

Learn more
Discover MakerZone

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn more

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply Today

MATLAB Academy

New to MATLAB?

Learn MATLAB today!