Question
The number of points of the form $(a+1, \sqrt{3} a), a \in Z$ lying inside the region bounded by $x^{2}+y^{2}-2 x-3=0$, and $x^{2}$ $+y^{2}-2 x-15=0$ are(a) 1(b) 2(c) 0(d) 3
Step 1
We can rewrite these equations in the standard form of a circle $(x-h)^2+(y-k)^2=r^2$ to find the centers and radii of the circles. Show more…
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