Substitute Command

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CAS Syntax

Substitute( <Expression>, <from>, <to> )
Substitutes from in expression with to.
Examples:
  • Substitute((x^2 / (4x + 6))^2 + 6(x^2 / (4x + 6)) + 8, x^2, a*(4x + 6)) yields a2 + 6 a + 8.
  • Substitute((3 m - 3)^2 - (m + 3)^2, m, a) yields 8 a2 - 24 a.
Substitute( <Expression>, <Substitution List> )
Substitutes in expression every variable of the list with the variable or number you choose for it.
Example: Substitute(2x + 3y - z, {x = a, y = 2, z = b}) yields 2a - b + 6.
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