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I was doing this question with the equation as shown in [Screenshot] and I was wondering how would I be able to solve this, I am getting a plus instead of a minus sign in part c this question parts c and d!

Would greatly appreciate any hints or help for part c and d, as I have been working on this for days already.

Thank you in advance kind people!

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  • $\begingroup$ Try removing the non linear terms by composition of the two equations. $\endgroup$
    – N74
    Oct 23, 2016 at 7:41
  • $\begingroup$ Do you mean add them up? $\endgroup$
    – Chris
    Oct 23, 2016 at 7:42
  • $\begingroup$ If yes, I tried that but I am getting plus signs instead of minus signs as the question required $\endgroup$
    – Chris
    Oct 23, 2016 at 7:42
  • $\begingroup$ I mean scaling, then subtracting. $\endgroup$
    – N74
    Oct 23, 2016 at 7:46
  • $\begingroup$ I'm sorry, but I really can't see what you mean by that? Can you kindly try and illustrate that? $\endgroup$
    – Chris
    Oct 23, 2016 at 7:51

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