GRE
The length of the semicircle PQ
The sum of lengths of line segments PD, DC and CQ
$$x^{2}$$+$$\frac{1}{x^{2}}$$
$$x^{3}$$+$$\frac{1}{x^{3}}$$
$$k+\frac{1}{k^{2}}$$
$$k^{2}$$+$$\frac{1}{k^{3}}$$
$$m$$
$$n$$
The number of points in S that are a distance of 2 units from the point (7, 5)
4
The number of points with equal distance from three lines
3
x
y
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