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# Distribution of an expression

Posted 10 years ago
 Hi, i would like to know which function can i use in Mathematica to have a distribution of an expression? for example: (A^2+m^2 )*?^2*(A+B)  becomes A^3*?^2+A*m^2*?^2+A^2*B*?^2+B*m^2*?^2  I don't want to have any brackets (in an other meaning, a command that give the opposite of "simplify" command) thanks.
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Posted 10 years ago
 I have this fonction? f1=Sin[b??(-m^2/a^2 +(m?(k_? ))/ab)] I want to distribute "b ? " into the square to obtain: f1=Sin?(-b^2?^2m^2/a^2 +b^2?^2(m?(k_? ))/ab) After I suppose??=a/b I will have:f1=Sin?(-?^2m^2/?^2 +?^2(m?(k_? ))/?)My question is : is there a command in mathematica that can give me this result?
Posted 10 years ago
 In[14]:= Expand[Cos[(x + y)^2]] Out[14]= Cos[(x + y)^2] In[15]:= Map[Expand, Cos[(x + y)^2], 1] Out[15]= Cos[x^2 + 2 x y + y^2] 
Posted 10 years ago
 thanks
Posted 10 years ago
 Expand
Posted 10 years ago
 when I have an expression with cosinus or sinus [ex. b²(1/b²t+cos(b²(s/t²+k/t²))] the "expand" command does not expand terms in brackets after cosinus. How can I do to expand this part?
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