srobbert's profile - activity

Thanks! This helps--also with the random_matrix command that I didn't ask about!

Best to you!

Thanks! I'll try this! (Sorry for the time lag in my response--my sabbatical is over, so now life is much more complicated!)

I am a novice Sage user, trying to get my Linear Algebra students to use Sage, too. One part of a problem I have assigned in the past asks a student to find the condition number of a matrix. In Maple, the command is just ConditionNumber(A), where A is a defined matrix. Is there a similar command in Sage?

Thanks for any help!

I am a new Sage user. I have been experimenting with Sage 7.3 on my Windows laptop using Oracle VirtualBox (Version 5.1.6 r110634). When I initialize Sage in Jupyter, the only way I have been able to use the notebook version is to first open a saved Jupyter Sage document I named Initialize_Notebook_Sage.ipynb and then executing the command notebook(). From that point, the application resets (after a short delay) and I have access to previously saved Sage Notebooks with the interface I expected. I tried to access notebooks through a browser using http://localhost:8080, but was unsuccessful.

While this workaround gets me to the desired interface, it is not the most elegant. Is there a way to access the Sage Notebook directly from the Jupyter screen or from the VirtualBox screen?

Thanks in advance for your help.

In Sage 7.3, the command is now find_local_maximum.

Thanks! This worked perfectly!

I am a new Sage user in the process of determining what aspects of previously utilized calculus Maple labs can be converted to Sage. The @interact feature is really interesting. How do I set up an @interact code so that a default value is used for the first use of the program?

My code to create a secant line plot allows the use to enter one input value (x_0) and select a function from a list prior to sliding an h value to modify the image. When the program is first run, the x_0 value shows as *None and I get error messages until I enter a number in place of None. Then the code works fine. Since this potentially is for students, I'd like to minimize the error messages...

Any help would be appreciated.

P.S. I tried to copy and paste my code (and also a screen shot image) into this box, but I am unable to copy from the VM into this program. Did I say I was a new VM user, too? Sigh.

Has this question ever been answered? I wonder the same thing. I am a new Sage user, (trying to) use Sage 7.3 in a VirtualBox and struggling with what seems like basic things.