Substituting a syms with an equation

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Philosophaie
Philosophaie 2013-6-28
I have a syms Array:
syms A11 A12 A13 A21 A22 A23 A31 A32 A33 a b c x y z
A=[A11 A12 A13;A21 A22 A23;A31 A32 A33]
.
How do I replace a symbolic variable A11 with an equation:
A11=a*x+b*y+c*z

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回答（1 个）

Walter Roberson
Walter Roberson 2013-6-29
subs(A, A11, a*x+b*y+c*z)

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