book Maths Puzzle Numerical Ability

I'm hoping to find the name of a particular graph. The function is f(x)=1/(x^2)+1... Could someone help? I need it within the next few minutes, if possible. Thanks in advanced for

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book Other Question

is there a trick to finding a prime number A strip of wood 66 inches long is to be cut into 5 1/2-inch pieces. How many pieces can be cut?