Visualization of the fixpoint <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle x}"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mi>x</mi></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle x}</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/87f9e315fd7e2ba406057a97300593c4802b53e4" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.338ex; width:1.33ex; height:1.676ex;" alt="x"></span> of the cosine function: <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle x=\cos(x)\approx 0.739085}"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mi>x</mi><mo>=</mo><mi>cos</mi><mo>⁡<!-- ⁡ --></mo><mo stretchy="false">(</mo><mi>x</mi><mo stretchy="false">)</mo><mo>≈<!-- ≈ --></mo><mn>0.739085</mn></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle x=\cos(x)\approx 0.739085}</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/26ed1fa5e291eacb566aeb6e50ed3dca9cbc228c" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:22.561ex; height:2.843ex;" alt="{\displaystyle x=\cos(x)\approx 0.739085}"></span>.
<a href="//commons.wikimedia.org/wiki/User:MartinThoma" title="User:MartinThoma">MartinThoma</a>
<span class="int-own-work" lang="en">Own work</span>