Ooh yay thanks @debbie for the upvote.

This bug should be fixed now!

thanks! and thanks to the question too!

More news about NOVID, from Pittsburgh's NPR Station, WESA!

@TSS-Graviser Actually, for three days next week, Prof. Loh will be doing a special live stream in collaboration with MATHCOUNTS, and he'll review the Chapter competition questions, in preparation for their special online contest the week of May 11th! (They are holding the State competition online, open to everyone (no prizes, though )

Ok thanks

@TSS-Graviser Your comment made my day!

@TSS-Graviser It's \(-1\) because the point in question is point \(A,\) which is at \((-1,0).\) Why does \(e^{\pi i}\) give us this point? Because \(\pi\) corresponds to the angle \(180^{\circ}\) in the picture!

@Kevin-Li You have the right idea! The key is that the only time the amount of money changes is when Boris trades in a penny for 5 quarters... But, does this always mean that the amount of money is multiplied by 125? Here's an example: If I have two pennies and a nickel, that's 7 cents. If I trade in one penny for 5 quarters, i'd have one penny, one nickel, and five quarters, and that's 131 cents. Hm, my money didn't exactly get multiplied by 125. What exactly changed? Once you figure that out, you'll get the answer in no time!

@EW Oops, you are totally right. That error slipped past our eyes. I've just fixed this; thanks so much for your patience and for letting us know right away!

@TSS-Graviser Thanks for pointing this out! Module 2 and 3 were recently updated, and we'll update the forum with new sections as soon as possible!

thank you Prof. Loh for replying me.

Really? nice.

haha lol

Hi TSS, That's really cool! What you found seems to be the source code for the forum post. That's the language that the computer program which runs the forum software uses. There are many kinds of languages, some popular ones of which are Javascript, C++, Python, etc., and some of the code in your screenshot seems to be from the language Markdown. You can even type Markdown code into your forum posts! This can allow you to make big font, like this: Big font and another language called Latex will allow you to write math symbols, like this: \( \frac{ \pi}{2} \) Here's a quick guide on some common Markdown commands and how to use them. Also, if you're interested in learning how to type math, try this short guide. Also, did you know that you can view the page source code of any website that you are browsing? Just right-click and you'll get a menu pop up like this: Click on "View page source," and try to guess what language the code is written in! Happy Learning, The Daily Challenge Team

@Kevin-Li We're no longer using the Discussions, as the forum is more full-featured and easier to use! Most of the useful Discussion posts were migrated over to the forums. Every video lesson should have a link to its own thread in the forum. Why is the forum better? You can search through topics You can type math You can edit posts Posts can be moved around You can search for most recent posts and more! Every Sunday, 7-9 pm (EST), we will hold office hours on the forum. Any questions asked during this time will be answered right away.

@Kevin-Li Hi there, I did some digging, and I figured out that you just took the Module 3 Placement exam (just for fun, as I see that you've finished Module 3 - congratulations!) Unfortunately, this is meant to be a diagnostic tool only, rather than a learning too, which is why solutions aren't readily available on the site. Thanks for asking, though!

@Kevin-Li We will get back to you with this... we're thinking about it!