lhs
Left side of an equation.
Category: Mathematics > Formula Manipulation and Simplification
Syntax
L = lhs(eq)
Returns the left-hand side of eq, element by element for an array of equations.
Description
Equations are built with ==, for example x^2 == 4*x + 1. lhs and rhs take them apart, which helps when post-processing the result of solve or when moving everything to one side with lhs(eq) - rhs(eq).
Input arguments
eq- Symbolic equation or array of equations.
Output arguments
L- Symbolic expression or array.
Example
Both sides of an equation
syms x
eq = x^2 == 4*x + 1;
lhs(eq)
rhs(eq)
Output
ans = x^2
ans = 4*x + 1