Alternative Equation Formats

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MathML

S (x) = {\begin{cases} P_{0} (x) & x < k_{1} \\ P_{i} (x) & k_{i} \leq x < k_{i + 1}; i = 1, 2, \dots, n - 1 \\ P_{n} (x) & x \geq k_{n} \end{cases}

Math Rendered as SVG

Math as LaTeX Source

\[ S(x) = \left\{ \begin{array}{ll} P_0(x) & \quad x<k_1 \\ P_ i(x) & \quad k_ i\leq x<k_{i+1}; \, i=1, 2, \dots , n-1 \\ P_ n(x) & \quad x\geq k_ n \end{array} \right. \]