Let’s do exercise 2, p134: check for a fixed point:

Let’s do exercise 2, p134: check for a fixed point:

y + 2 = x and 2 - x = y…using substitution (eqn2 into eqn 1)

2 - x + 2 = x ? x = 2 ? y = 0

so (2,0) is the fixed point.

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