KeTCindy数式入力システムの使い方

$\pi$ $\frac{b}{a}$ $a^x$ $\sqrt{a}$ $\sqrt[b]{a}$ $\log_a\!\!x$ $\sin x$ $\sin^2 x$ $\alpha,\beta,$ $\cdot$ $\times$ $\circ$ $\leq$ $\geq$ $=\!\!\!\!\! /$ $\Rightarrow$ $\Leftrightarrow$
pi fr(b,a) a^(x) sq(a) sq(b,a) log(a,x) sin(x) sin(2,x) {G}a,{G}b, {Dot} {Crs} {Cir} <= >= Ne ==> <==>

$\displaystyle\lim_{x \to a}f(x)$$\int f(x)dx$$\int_a^b f(x)dx$$\sum_{k=a}^b f(k)$
lim(x,a,f(x))int(f(x),dx)int(a,b,f(x),dx)sum(k=a,b,f(k))

$\infty$ $\to$ $\nearrow$ $\searrow$ $\cdots$ $\pm$ $\mp$ $\partial$ 文字空け
\infty \to \nearrow \searrow \cdots \pm \mp \partial \ , \; , \,