Hello everyone. Welcome back. We had a good weekend. We'll be starting this week off with learning about introduction to integrals and we'll be starting with the brief example of just integrating X from the lower bound of zero to upper bound three. So now might have just seen like a lot of your words too. You might not know half of what I've said, but we'll be starting with basic with what is in integral. So integral is the opposite of what we learned last week in that it is essentially the opposite of the differentiation. Instead of finding the slope of a function they did last week, essentially finding the area under a curve.

So what does this mean? That means if we grab the function here on a basic y X, we wanna grab this function X from the lower bound of zero to the upper bound of three. We have 1, 2, 3, 1, 2, 3. Then we're gonna graph this. So let's do a different color. So just use our basic algebra skills and grab that. And then we eventually wanna find, we call the area under the curve is this triangle we you right here. So we don't even need a calculus to be able to solve, but this integral is we can solve it by just knowing what the area of triangle is, right? So let's just do this for purposes of learning that we have one half times the three times the height, which is three and that's 0.5.