![tikz pgf - What is the easiest way to plot a function and its tangent lines at the turning points? - TeX - LaTeX Stack Exchange tikz pgf - What is the easiest way to plot a function and its tangent lines at the turning points? - TeX - LaTeX Stack Exchange](https://i.stack.imgur.com/LHTcw.png)
tikz pgf - What is the easiest way to plot a function and its tangent lines at the turning points? - TeX - LaTeX Stack Exchange
![Plotting with TikZ, Part III: Plotting a function defined by a formula, and plotting functions that go through certain points - chrisphan.com Plotting with TikZ, Part III: Plotting a function defined by a formula, and plotting functions that go through certain points - chrisphan.com](https://chrisphan.com/tikz_2019-05_img/example5a.png)
Plotting with TikZ, Part III: Plotting a function defined by a formula, and plotting functions that go through certain points - chrisphan.com
![Plotting with TikZ, Part III: Plotting a function defined by a formula, and plotting functions that go through certain points - chrisphan.com Plotting with TikZ, Part III: Plotting a function defined by a formula, and plotting functions that go through certain points - chrisphan.com](https://chrisphan.com/tikz_2019-05_img/example2.png)