Safari Live - Day 337 | National Geographic

So I have the function G here; it’s expressed as a fourth degree polynomial. I want to think about the intervals over which G is either concave upwards or concave downwards. Let’s just remind ourselves what these things look like. Concave upwards is an i…

So we have a function f of x that’s written as the product of a bunch of first degree expressions. Now, if we obviously could also view this as a polynomial, especially if we expand this all out, it’ll have our more traditional form. But what’s nice about…

[Instructor] - Hi, everyone. Today, we’re gonna talk about chromosome pairs. But first, I’ve got a question for you. Between a black mulberry plant, a Guinea pig, and a human being, which organism do you think has the most chromosomes? The mulberry plan…

What I want you to do is evaluate the expression 5x squared when x is equal to 3. Pause this video and have a go at that. All right, well we just have to think about every place we see an x; we’ll now replace it with a 3. So this is going to be equivale…

[Instructor] We are asked, which of these complex numbers has a modulus of 13? And just as a bit of a hint, when we’re talking about the modulus of a complex number, we’re really just talking about its absolute value. Or if we were to plot it in the compl…

Hi everyone, Sal here from Khan Academy. Welcome to our homeroom live stream. I’m very excited about the conversation we’re going to have with Linda Darling-Hammond. Before we jump into that, I’ll give my standard announcements first. A reminder that Kha…