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CD ROM Paradise Collection 4 1995 Nov.iso
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SYMBMATH.H08
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1994-03-29
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3.1.6 Equations
An equation is an equality of two sides linked by an equation
sign =, e.g. x^2+p = 0, where the symbol = stands for an equation.
Note that the symbols "=", "==" and ":=" are different:
":=" is the assignment, "==" is the equal sign, but "=" is the
equation sign.
Example:
IN: 2 = 2
OUT: 2 = 2 # unevaluated
IN: 2 == 2
OUT: 1 # evaluated to 1 (true)
Systems of equations are a list of equations, e.g.
[a1*x+a2*y=a3, b1*x+b2*y=b3].
3.1.7 Inequalities
e.g.
a < b less than
a <= b less than or equal to
a > b greater than
a >= b greater than or equal to
a == b equal to
a <> b not equals