Establish associative law of multiplication

  • Thread starter kathrynag
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  • #1
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Homework Statement


Establish associative law of multiplication by considering absolute values and arguements.
z1(z2z3)=(z1z2)z3


Homework Equations





The Attempt at a Solution


I think I need to use r(costheta +isintheta)
r1(costheta1+isintheta1)[r2r3(costheta2+isintheta2)(costheta3+isintheta3)]=
Is this just a bunch of multiplying out and showing it's the same?
 

Answers and Replies

  • #2
Dick
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Yes. The magnitudes multiply and the arguments add. Both operations are associative.
 
  • #3
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Ok, I think I see.
 

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