Why CAS - Technical guide
Here you can find some hints if you want to solve the problem by using technology. You have different kinds of hints to pick up ones which suit you best:
  Electronic Paper
Short not available in this case  DOC short PDF short Main technical commands to solve this problem by using TI-Nspire™
Long   film

el Long 
The  screencast of the steps of one possible complete solution process

The solution created with TI-Nspire™ (Tns-file)  
 DOC long PDF long One possible complete solution

WhyCAS
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