Question 1164603
Given f(x)= 2/x - 4 and g(x)= {{{sqrt(1-x^2)}}} determine: 
a) f(x+h)−f(x) / h
Is it {{{f(x) = (2/x) - 4}}} ?
Or {{{f(x) = 2/(x - 4)}}} ?
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(b)g(2−h)
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g(x)= {{{sqrt(1-x^2)}}}
Sub 2-h for x
{{{g(2-h) = sqrt(1 - (2-h)^2)}}}