Hello attached is the question part C which I need help on and my working out so far for part c. I was wondering if I was going about it right and if anyone could give some clues or advice it would be much appreciated.
Kind regards
In your solution to (b), you should have noticed that the "-2" could have been any number. So when you substitute $\displaystyle x=ct$, you want the ratio of the coefficient of $\displaystyle t^3$ to the coefficient of $\displaystyle t$ to be 4 to 3 - use that to find c. Then you can multiply the whole equation by something to get $\displaystyle 4t^3 + 3t + \text{whatever} = 0$. Then you just make the substitution and solve the equation like you did in (b).
- Hollywood