Two calculator exam problems

[Peter Murphy]

Thanks again Thomas and Dizzy. Your suggestions helped me break through my mental barrier on this stuff.

I still must explore Dizzy's solution to problem A, but I rendered f(x) as the corresponding coefficient array [ -1 -1 4 -3 2 1] 'F' STO.

Then this programmed expression

<< F F * PEVAL PEVAL .5 - >> STEQ

allowed me to plot g(x) and find x = 0.21399.

Now for problem B.

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