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Here is just an simple example that I want to use Maple to solve: $h(x)=f(g(x))$ $g(x)=2x+1$ $h(x)=4x^2+4x+7$

Find polynomial of $f(x)$

Thanks :)

2 Answers 2

6

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The desire function is the last output as you see. Thanks.

  • 1
    Perhaps it might be helpful to explain the commands a bit, like does "solve (g(x)=t,x)" always calculate the inverse of the fuction or what does "subs" do.2012-05-28
1

For fun,

> h:=x->4*x^2+4*x+7: > g:=x->2*x+1:  > rsolve( f(g(x)) = h(x), f(x) );                                   2                                 x  + 6 
  • 0
    No. I don't think it's just for fun. it's nice. but I don't know your solution compare to first one (above post) will be same performance or not :)2012-05-28