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It removes parameter ttt for a direct xxx and yyy relationship.
They are in the form x=f(t)x = f(t)x=f(t) and y=g(t)y = g(t)y=g(t).
Solve one equation for the parameter ttt.
t=f−1(x)t = f^{-1}(x)t=f−1(x) if f−1f^{-1}f−1 exists.
Substitute ttt into the other equation y=g(t)y = g(t)y=g(t).
x=2t+3x = 2t + 3x=2t+3 and y=t2−1y = t^2 - 1y=t2−1.
y=(x−3)2/4−1y = (x - 3)^2/4 - 1y=(x−3)2/4−1.
It represents a parabola opening upwards.
Eliminate the parameter using trigonometric identities.
x2+y2=1x^2 + y^2 = 1x2+y2=1, representing a circle.
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