Two Trains Leave Paris by Taylor Frey

Author:Taylor Frey
Language: eng
Format: epub
Publisher: Abrams
Published: 2019-06-14T16:00:00+00:00

Let’s take the derivative of the function at x = 2.

So right now, we are just looking for the rate of change at the point where x = 2, which can be measured as the slope of the blue line, which is tangent to the graph at x = 2. (In this context, tangent means the line touches the curve at only one place, without intersecting. It does not mean opposite/adjacent like it did in the Trigonometry chapter. Yes, the word “tangent” means two different things, like a parent saying to their kid, “You’re brave to wear that.”

The derivative of a function, usually written as f′(x), is calculated with this relatable, easy-to-use formula:

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