To write maths stuff press the \( \sqrt{a} \) button, and add the blue text below
x^2 \(\Rightarrow x^2 \)
x_2 \(\Rightarrow x_2 \)
\alpha \pi \(\Rightarrow \alpha \pi \)
\lim_{x \to \infty} e^{1-x} \(\Rightarrow \lim_{x \to \infty} e^{1-x}\)
k_{n+1} = n^2 + k_n^2 \(\Rightarrow k_{n+1} = n^2 + k_n^2 \)
\frac{n!}{k!(n-k)!} = \binom{n}{k} \(\Rightarrow \frac{n!}{k!(n-k)!} = \binom{n}{k} \)
x^\frac{1}{2} \(\Rightarrow x^\frac{1}{2} \)
\sqrt{\frac{a}{b}} \(\Rightarrow \sqrt{\frac{a}{b}} \)
\sqrt[a]{b} \(\Rightarrow \sqrt[a]{b} \)
\displaystyle\sum_{i=1}^{10} t_i \(\Rightarrow \displaystyle\sum_{i=1}^{10} t_i \)
\int_0^\infty \mathrm{e}^{-x}\,\mathrm{d}x \(\Rightarrow \int_0^\infty \mathrm{e}^{-x}\,\mathrm{d}x \)
\frac{\mathrm d}{\mathrm d x} \big( k g(x) \big) \(\Rightarrow \frac{\mathrm d}{\mathrm d x} \big( k g(x) \big) \)
x \in [-1,1] \(\Rightarrow x \in [-1,1] \)
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For Matrix use & for colums and \\ to end row
\( M = \begin{bmatrix}
A & B & 0 \\
C & D & 0 \\
E & F & 1
\end{bmatrix} \)
M = \begin{bmatrix}
A & B & 0 \\
C & D & 0 \\
E & F & 1
\end{bmatrix}
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