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Diffstat (limited to 'html/encyclopedia/mathematics.html')
| -rw-r--r-- | html/encyclopedia/mathematics.html | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/html/encyclopedia/mathematics.html b/html/encyclopedia/mathematics.html index 888361f..cec4848 100644 --- a/html/encyclopedia/mathematics.html +++ b/html/encyclopedia/mathematics.html @@ -27,7 +27,7 @@ <p class="math">\(\sqrt[y]{z}=x\)</p> <p class="math">\(log_{x}(z)=y\)</p> <br /> - <p class="math">\(x^n=\frac{1}{x^{-n}}, x \lt 0\)</p> + <p class="math">\(x^n=\frac{1}{x^{-n}}, n \lt 0\)</p> <p class="math">\(x^0=1\)</p> <p class="math">\(x^{\frac{a}{b}}=\sqrt[b]{x^a}\)</p> <br /> @@ -50,8 +50,8 @@ <p class="large">Ligninger</p> <p>Andengrads:</p> <p class="math">\(ax^2+bx+c=0\)</p> - <p class="math">\(x=\frac{-b \pm \sqrt[2]{d}}{2a}\)</p> <p class="math">\(d=b^2-4ac\)</p> + <p class="math">\(x=\frac{-b \pm \sqrt[2]{d}}{2a}\)</p> </div> <div class="section" id="functions"> <p class="large">Funktioner</p> @@ -117,14 +117,15 @@ <p class="math">\(deg(rad)=\frac{rad \cdot 180}{\pi}\)</p> <p class="math">\(rad(deg)=\frac{deg \cdot \pi}{180}\)</p> <br /> - <p class="math">\(vinkelsum(x)=(x-2)\pi\)</p> - <p class="math">\(vinkelsum(3)=(3-2)\pi=\pi\)</p> + <p class="math">\(\sum \theta=(n-2)\pi\)</p> + <p>... hvori <i>n</i> er antallet af vinkler.</p> + <p class="math">\(\sum \theta=(3-2)\pi=\pi\)</p> <br /> <p class="math">\(\angle A=sin^{-1}(\frac{a}{c})=cos^{-1}(\frac{b}{c})=tan^{-1}(\frac{a}{b})=vinkelsum(3)-\angle B-\angle C\)</p> <p class="math">\(\angle B=sin^{-1}(\frac{b}{c})=cos^{-1}(\frac{a}{c})=tan^{-1}(\frac{b}{a})=vinkelsum(3)-\angle A-\angle C\)</p> <p class="math">\(\angle C=vinkelsum(3)-\angle A-\angle B\)</p> <p>I en regulær trekant:</p> - <p class="math">\(\angle A=\angle B=\angle C\)</p> + <p class="math">\(\angle A=\angle B=\angle C=\frac{\pi}{3}\)</p> <p>I en retvinklet trekant:</p> <p class="math">\(\angle C=\frac{\pi}{2}\)</p> <br /> |