Questions and discussion for this lecture live here. Fire away by hitting Reply below 
Hi Séan, when I mutliply the teo M values together, prior to integrating; Im getting coefficient of -64.2 for x^2 and not -63.7. Would you have any idea why I’m getting this wrong as all the other coefficients are correct. Thank you
Apologies for the delay in replying to your post.
The coefficient of x^2 is actually +64.2 (so we were both half right 
)
The full polynomial is…
-7.5x^3 + 64.2x^2 - 79.5x - 270
Thanks for spotting and posting!
Seán
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