bev's profile - activity

Thank you for going to this much trouble to share my pain. I was also able to simplify the sage expression, but maple did it all by itself. I don't have maple myself, a [rich] friend did it for me. Thanks again.

The latest linux (slackware) version I was able to find is 7.3, which I'm using. I'll try to find 7.5.1 and report back...

Maple gives a different answer for the integral, and maple has a simplify function which reduces the integral to (bln(acos(x)+b*sin(x))+ax)/(a^2+b^2).

I tried to use the simplify_full function for the sage integral, and it didn't change anything.

In order to get 7.5.1 I downloaded the source code, but it wouldn't compile -- it came up with an error about sem_open, which I traced back to a known error #3770 which I couldn't use to unravel the problem. Accordingly, I tossed the source and downloaded the binary (Ubuntu 64-bit.bz2) and the file terminated abruptly, so I went to MIT -- their download worked, I could unzip and run it. If you've read this far, I have one more request --

When I compare this version of sage to 7.3, this does funny things with colors as I type a line in console mode -- which is especially troubling since it changes open and closed parens to big white blocks. Is there a simple way I can turn that off?

Thanks for your help.

If you ask sage to symbolically integrate the following properly, the answer is wrong. Why?

cos(x)/(acos(x) + bsin(x))

[Aside -- the captcha was invisible with firefox 50.1/linux, leading to much teeth-gnashing. Seems to work OK with Chrome. Not happy]

Tired of seeing strange characters presumably representing some sort of box around areas of text.